The Magnetic Depths

The emerging sub-genre of public service announcements about geological surveys—apparently offered not just due to FAA regulations, but to quell the growth of potential conspiracy theories—continues with this heads-up about a “low-flying airplane” over parts of Virginia and North Carolina.

[Image: USGS map of eastern Virginia, altered by BLDGBLOG.]

Of course, beyond the idea of simply preempting the development of new conspiracy theories, the work being done by the project is fascinating in and of itself: “Instruments on the airplane will measure variations in the Earth’s magnetic field and natural low-level radiation created by different rock types near and up to several miles beneath the surface. This information will help researchers develop geologic maps of the area that will be used to better understand sand resources and underground faults in the region.”

While we’re on the topic of the Virginia/North Carolina border region, I’m reminded of why there’s a strange “notch” in the state line, a story “that mostly involves collecting taxes and avoiding swamps”: “The rough and rowdy inhabitants living close to the border told North Carolina tax collectors they lived in Virginia, [Gates County historian Linda Hofler] said. When the Virginia tax man came, they said North Carolina was their home.”

In any case, check out the USGS for more on the low-flying geomagnetic airplane and The Virginian-Pilot for more on VA/NC border history.

(Related: Geomedia, or What Lies Below.)


[Image: How do you resist a map with features like Labyrinth, the Asgard Range, and Inland Forts?! (via).]

A new magazine called Antarktikos has launched with an open call for papers on the theme of “Mapping Nature.”

For the inaugural issue, they’re seeking “any kind of research, story, or visualization related to the mapping of Antarctica. From ice cores containing the information trapped in 20,000-year-old air bubbles, to the architectural drawing of research stations, to imaginary maps of Antarctica in the year 3000.”

Click through for more info.

Tactical Geography

[Image: A map of the Battle of Villmanstrand (1741), via George III’s Collection of Military Maps, assembled by Yolande Hodson.)

A vast collection of old military maps has been made available online through the UK’s Royal Collection Trust, taken from the collection of King George III, thanks to the exhaustive work of Yolande Hodson. While the troop positions and tactical maneuvers they document are fascinating, the maps are also a spatial survey of building types, terrains, and urban plans, including star forts, walled villages, protected natural landscape features, from bays to river valleys, and other strategic environments.

As the blog Ian Visits explains, “Maps were an important part of George’s early life and education, and he built up a huge collection of more than 55,000 topographical, maritime and military prints, drawings, maps and charts. Upon the King’s death, his son, George IV, gave his father’s collections of topographical views and maritime charts to the British Museum (now in the British Library), but retained the military plans due to their strategic value and his own keen interest in the tactics of warfare.” The new website apparently documents a mere 3,000 of those documents.

The whole thing is searchable by conflict, which means that you can look specifically for maps related to, say, the Franco-Spanish War of 1635-59, including the Siege of Cremona (1648)—seen below—or, say, the Russo-Swedish War of 1741-43, which included the Battle of Villmanstrand (1741), the image that opens this post.

[Image: A map of the Siege of Cremona (1648), via George III’s Collection of Military Maps, assembled by Yolande Hodson.)

Perhaps even better, however, you can also click on maps by region, from North America to India to, of course, all over Europe and the Caribbean. This includes, among the thousands of examples, an incredible map from the American Revolution depicting New York City in all of its topographic glory.

[Image: Long Island, New York and Staten Island (1776), via George III’s Collection of Military Maps, assembled by Yolande Hodson.)

Indeed, as Ian Visits notes, “Highlights of the collection include two-metre-wide maps of the American War of Independence. These vast maps were probably hung on purpose-made mahogany stands in Buckingham House, enabling the King to follow the steady erosion of his hold on the American colonies.”

The collection is spectacular. The Siege of Memel (1757). The Siege of Olmütz (1758). A view of Gotha (1567). The Siege of Prague (1757). I could go on and on. The Plan of Pilau (1757). The Siege of Bangalore (1791)…

Check out the guide to the online catalog, then dive in.

(Vaguely related: Feral Cities, Indirect Streets, and Soft Fortification.)

Feral Cities, Indirect Streets, and Soft Fortification

[Image: “Thomas de Leu, engraver. Perspective view of an ideal city, 1602. From Jacques Perret, Architectura et perspectiva des fortifications & artifices de laques Perret. Courtesy CCA].

[Nearly a decade ago, I wrote a series of blog posts as part of a Fellowship at the Canadian Centre for Architecture. Those posts appear to be falling into an internet memory hole, so I thought I’d reproduce lightly edited versions of some of them here, simply for posterity.]

In 1564, the Tuscan urban planner, archaeologist, military theorist, mathematician, and writer Girolamo Maggi published a work of military urbanism called Della fortificatione delle città, written by his colleague Giacomo Fusto Castriotto.

That work, on the fortification of cities, devoted several passages to what might be called indirect or soft fortification: protecting an urban population from attack not through the use of heavy walls, inner citadels, or armed bastions—although the book is, of course, filled with such things—but through nothing more than a complex street plan.

Indirect streets and narrow walkways could be put to use, Castriotto argued, as agents of spatial disorientation, leading an invader everywhere but where they actually wanted to go. It was a kind of urban judo, or the city as martial art.

The city itself could be weaponized, in other words, its layout made militarily strategic: you could transform the speed at which your enemy arrives into exactly what would entrap him, lost, unable to retrace his footsteps, fatally vulnerable and spatially exposed.

The CCA exhibited much of its collected manuscripts on urban fortification seventeen years ago, under the name The Geometry of Defence: Fortification Treatises and Manuals, 1500–1800.

In the accompanying pamphlet, curator and former CCA historiographer Michael J. Lewis describes the geometric complexification that the fortified cities of the Renaissance underwent in the name of self-protection (Alberto Pérez-Gómez’s Architecture and the Crisis of Modern Science also contains a lengthy history of this same material and is worth consulting in full). A constantly shifting imbalance of power between the wall-builders and the invaders led to new spatializations of the metropolis. Whether due to the invention of gunpowder, massed assaults or simply new building techniques, the urban landscape was constantly reformatted according to the weapons that might be used against it.

Of course, this will be a very familiar story to most readers, so I don’t want to repeat it; I do, however, want to focus on the idea of forsaking mass—thick walls—for complexity in the name of strategic disorientation. There are well-known stories, for instance, of English coastal villages during World War II removing their road and street signs so as to prevent logical navigation by German aggressors, even erecting dummy signs to send confused Nazi paratroopers wandering off in the wrong direction.

But if the well-fortified Renaissance city could be seen, for the sake of argument, as something like the Hummer of military urbanism, what is the city-as-Bruce-Lee? A city that is lean, even physically underwhelming, but brilliantly fast and highly flexible? What is the city that needs no defensive walls at all?

[Image: “Unknown engraver. Series of views showing the development of the modern bastion system from its medieval origins. Plate A from Matthias Dögen, Matthiae Dögen Dramburgensis marchici Architectura militaris moderna, 1st ed. (Amsterdam, Ludovic Elzevir, 1647).” Courtesy CCA].

There are a variety of possible answers here, all of which would be interesting to discuss; but I’m most struck by the possibility that the phenomenon recently dubbed the “feral city” is, in a sense, an anti-fortress in precisely this spatial sense.

In a now-canonical 2003 paper for the Naval War College Review, author Richard J. Norton describes the feral city as “a great metropolis covering hundreds of square miles. Once a vital component in a national economy, this sprawling urban environment is now a vast collection of blighted buildings, an immense petri dish of both ancient and new diseases, a territory where the rule of law has long been replaced by near anarchy in which the only security available is that which is attained through brute power.”

From the perspective of a war planner or soldier, Norton explains, the feral city is spatially impenetrable; it is a maze resistant to aerial mapping and far too dangerous to explore on foot. Indeed, its “buildings, other structures, and subterranean spaces would offer nearly perfect protection from overhead sensors, whether satellites or unmanned aerial vehicles,” Norton writes, creating, in the process, an environment where soldiers are as likely to die from rabies, tetanus, and wild dog attacks as they are from armed combat.

I’m led to wonder here what a twenty-first-century defensive literature of the feral city might look like—from temporary barricades to cartographically incoherent slums experimenting with limited forms of micro-sovereignty. If the feral city is a city with no external walls but an infinite interior—endless spaces made of oblique architecture and indirect streets—then its ability to defend itself comes precisely through letting invaders in and fatally disorienting them, not by keeping them out.

So if a city does away with defensive walls altogether, what specific spatial strategies are left for it to protect itself? For instance, can a city deliberately be made feral as an act of preemptive self-defense—and, if so, what architectural steps would be necessary to achieve such a thing? Channeling Archigram—or perhaps even Cisco—we might call this the insurgent instant city complete with its own infrastructural practices, its own rogue designers, and its own anti-architects.

How, then, could the spatial practice of urban feralization be codified, and what architectural lessons might be learned if this were to happen?

Michael J. Lewis, describing the treatises on display at the CCA nearly two decades ago for The Geometry of Defence, refers to “fortification literature” or “the literature of the fortification,” including the publishing practices peculiar to this—for its time—top secret field of study. For example, privately circulated manuscripts, incomplete essayistic reflections, and even word-of-mouth gradually solidified into full-length narratives; only at that point were they intended to communicate finely tuned, often firsthand, military knowledge of a city under siege to anyone who might want to discover it, whether that was a king, a layperson, or an enemy general (indeed, much of the literature of fortification went on to the form the core of an emergent field known as urban planning).

In another fifty, one hundred, or even five hundred years, will there be a defensive literature of the feral city, its systematic description, techniques for its defense (or obliteration), and its urban logic (or lack thereof)? Even if only on the level of urban form, this would be a fascinating journey, going from Castriotto’s and Maggi’s indirect streets to whole cities gone wild in the name of resisting outside intervention.

Assignment Baghdad

[Image: Screen-grab from a YouTube compilation of Desert Storm missile strikes].

In the summer of 2016, I heard an incredible story from a retired Defense Intelligence Agency analyst. It combined architectural history, international espionage, an alleged graduate research seminar in Washington D.C., and the first Gulf War. I was hooked.

According to this story, a graduate class at a school somewhere in D.C. had set out to collect as much architectural information as it could about Saddam Hussein’s Iraq. This meant, at one point, even flying to Europe on a group field trip to visit engineering firms that had done work for Saddam Hussein.

Given the atmosphere at the time, the students most likely thought that their class was an act of protest, a kind of anti-war gesture, meant to help record, document, and even preserve Iraqi architecture before it was destroyed by the U.S. invasion.

Ironically, though, unbeknownst to those students—possibly even to their professor—the seminar’s research was being used to help target U.S. smart bombs. Or, as I phrase this in a new article for The Daily Beast, “there was a reason U.S. forces could put a missile through a window in Baghdad: they knew exactly where the window was. Architecture students in Washington D.C. had unwittingly helped them target it.”

[Image: YouTube].

But then things got complicated.

When I called my source back a few weeks later to follow up, it felt like a scene from a spy film: he said he didn’t remember telling me this (!) before joking that he was getting old and maybe saying things he shouldn’t have. This obviously only made me more determined to find out more.

I called every major school in Washington D.C. I FOIA’d the CIA. I started down a series of rabbit holes that led me from true stories of Gulf War espionage, involving U.S. attempts to collect blueprints for Saddam’s bunkers from engineering firms all over Europe, to a conversation with the head of targeting for the entire U.S. Air Force during Operation Desert Storm.

Along the way, I also kept finding more and more examples of architects and espionage, from Baron Robert Baden-Powell’s incredible use of butterfly sketches to hide floor plans of enemy forts to a 16th-century Italian garden designer who was, most likely, a spy.

[Image: Robert Baden-Powell’s clever use of entomological sketches to hide enemy floorplans, from his essay “My Adventures as a Spy.” See also Mark David Kaufman’s interesting essay about Baden-Powell for the Public Domain Review].

Even Michelangelo gets involved, as his designs for urban fortifications outside Florence, Italy, were secretly modeled in cork and snuck out of the city by an architect named Niccolò di Raffaello dei Pericoli—or Tribolo—in order to help plan a more effective siege (an anecdote I have written about here before).

In any case, I was sitting on this story for the past two years, waiting for my FOIA request to come back from the CIA and trying to set up interviews with people who might have known, first-hand, what I was asking about. The resulting article, my attempt to track down whether such a class took place, is finally up over at The Daily Beast. If any of the above sounds interesting, please click through to check it out.

Finally, of course, if this rings any bells with you—if you took a class like this and, in retrospect, now have doubts about its real purpose—please be in touch.

Black Box

[Image: Courtesy AFP/Getty Images, via The Guardian].

A “huge granite sarcophagus” has been unearthed during construction work in Egypt. Physical evidence suggests that it has never been opened and that it has rested, undisturbed in the earth, for thousands of years. The lid alone apparently weighs fifteen metric tons.

In a sense, it feels oddly timely, the ultimate black box for our increasingly dark timeline in modern history, like some symbolic, mythic glimpse of that-which-should-not-be-opened but, of course, someone will inevitably open. Although, I suppose, I’m with Warren Ellis on this one.

Cities of the Sun

[Image: Ningbo, China, via Google Maps].

Although I’ll leave it up to you to decide if you agree with the author’s critique of planning regulations, there is a fascinating post over at NYU’s Marron Institute. It was originally published back in 2014, but I just saw it the other day thanks to a tweet from Nicola Twilley.

There, Alain Bertaud describes a planning rule from 1950s China: “In the 1950s,” Bertaud writes, “China established a regulation requiring that at least one room in each apartment receive a minimum of one hour of sunshine on the day of the winter solstice, December 21.”

As an architectural constraint, this is actually quite amazing: it needn’t inspire identical towers with identical windows all pointing in the same direction, but could very easily lead to a riot of creativity and innovation, pushing architects to imagine increasingly clever structural and material means for opening even the deepest megastructural interior to winter sunlight.

In a sense, I might say, it is not the regulation’s fault if architects come to the table with a yawning and lackluster response. While this is admittedly an anachronistic comment, given what little I know about city planning in China’s state-driven economy of the 1950s, my larger point is simply that even extreme design constraints can be implemented with subtleness and creativity.

[Image: Guangzhou, China, via Google Maps].

Bertaud continues: “even though the rule no longer applies, its impact on the spatial structure of Chinese cities remains.” This kicks off a kind of forensic examination of Chinese urban form, with the goal of finding the sun of the winter solstice shining somewhere at each city’s regulatory core.

First of all, right away stuff like this is incredible: it is urban-planning analysis as astronomical inquiry, or, more abstractly speaking, it is the suggestion that, hidden somewhere in the fabric of the world we’ve built for ourselves, there are traces of older rules or beliefs that still make their presence known.

This is why things like apotropaic marks are so interesting, for example, not because you have to believe in the occult, but because these marks reveal that even superstition and folklore have spatial effects, and that these beliefs have influenced the design and construction of thresholds and hearths for centuries. Even apparently secular architecture has irrational patterns of belief built into it.

[Image: Beijing, China, via Google Maps].

In any case, the solstice-planning rule “boiled down to a simple mathematical formula: distance d between buildings is determined by the height of building h multiplied by the tangent of the angle α of the sun on the winter solstice at 11:30 in the morning using solar time.” It is “a mathematical formula linked to the movement of the sun,” which, for Bertaud, falsely lent it the air of science, creating the illusion that this approach was rational—in short, that it was a good idea.

One interesting emergent side-effect of the rule, however, is that, by necessity, it had different spatial effects at different latitudes due to the curvature of the Earth. Chinese urban form became a kind of diagram of the Earth’s relationship to the solar system: the distances between buildings, the layouts of rooms inside those buildings, the locations of windows inside those rooms, all taking their cue from a celestial source.

Like a careful study of Stonehenge, you could reverse-engineer the precise location of the sun on a specific day of the year from the layouts of Chinese cities.

But is such poetry really worth it, economically and spatially? Bertaud certainly thinks not. Check out the original post for more.

(The images in this post were arbitrarily taken from Google Maps purely based on locations referred to by Bertaud’s post; they should not be seen as visual evidence of the 1950s planning law discussed here.)

Wood from the Witch House

[Image: Via LASSCO].

This is amazing: shortly after writing an earlier post, I found this anecdote from an architectural salvage company in England called LASSCO. It’s like the beginning of a blockbuster film. A customer came in one weekend looking for “an oak beam for his fireplace lintel.” As LASSCO explains, the company tries to keep “a selection of them in stock—salvaged, prepped up and ready to sell. It was only when placing one of the beams aside we happened to put it down with daylight glancing along its length and we spotted that it held a secret. It was covered in apotropaic markings.”

Apotropaic markings, or protection marks, are basically magic symbols thought to ward off evil influences and keep malevolent fates at bay—and they are more common in traditional architectural practice than you might think. LASSCO even recommends checking your own house for them.

“If you live in a timber-framed house dating back earlier than the eighteenth century,” they advise, “look out for scratchings on the bressumer beam, sometimes only very lightly inscribed at the top corners of the fireplace, like the scratching of a cat. Look for a repeated ‘W’—thought to be a double ‘V’ for ‘Virgo Virginum’. Look for daisy wheels—a circular device with petals, or runic symbols—a ‘P’ incorporating a cross, or a ‘W’ incorporating a ‘P’. Look for two verticals with a ‘Saltire’ cross between them—a motif also much used on iron door latches and bolts and wrought iron firedogs.”

What an incredible setup for a horror film or novella: an architectural salvage firm uncovers strange ritual markings on pieces of timber in their inventory, and the macabre knock-on effects this might have as these bits of weird wood are incorporated into someone else’s home.

Alas, LASSCO’s tale is from 2013 and the oak beam has since been sold.

Cathedral Apprentice

[Image: Lincoln Cathedral, via Visit Lincoln].

This sounds incredible: England’s Lincoln Cathedral is looking for an Apprentice Stonemason.

This is a three-year post, including training leading to NVQ Level 3 in Stonemasonry. Working within a supportive team you will be mentored by qualified Cathedral masons and other heritage craft professionals. You will work within the workshop and out on site, and you will undertake block release training at college. Please note that, as the local colleges do not offer a stonemasonry course, this post will require you to live away from home for the periods of block release training. (We will pay all essential travel, accommodation and subsistence costs as well as all college fees.)

As a Cathedral apprentice you will learn the masonry conservation skills to care for one of the finest buildings in the world, and you will lay the foundation for a meaningful career in the built heritage sector. A strong passion for working within the heritage sector is an absolute must, as is some proven expertise in practical skills.

Applications are accepted until June 1st, so hop to it.

Ghost Reefs

[Image: 18th-century nautical chart by George Gauld, via Geographical].

A theme that has near-universal appeal for me is when old maps reveal the presence of something in the landscape that people have otherwise overlooked or forgotten. It could be a lost road deep in the mountain forests of Vermont, for example, or it could a whole series of missing reefs off the coast of Florida.

Earlier this year, a team of researchers led by Loren McClenachan at Colby College in Maine found what they called “ghost reefs” in old nautical charts drawn by an 18th-century British surveyor named George Gauld. When the team compared Gauld’s maps with modern satellite images of the same landscape, “a stark picture of shrinking coral emerged: Half of the reefs recorded in the 1770s are missing from the satellite data,” the Washington Post reported.

There are limitations to the approach, of course: “It’s impossible to tell whether the [18th-century] surveyors distinguished between living and dead coral, for example, or how long the reefs had persisted,” the Post writes, but the idea of finding ghost geographic forms in old maps is too evocative not to mention here.

Warnings Along the Inundation Line

[Image: Cover from An Incomplete Atlas of Stones by Elise Hunchuck].

After the Tōhoku tsunami in 2011, one of the most ominous details revealed about the coast where it struck, for those of us not familiar with the region, was that a series of warning stones stand there overlooking the sea, carved with sayings such as, “Do not build your homes below this point!

As part of her recent thesis at the Daniels Faculty of Architecture, Landscape, and Design—a school of the University of Toronto—landscape architect Elise Hunchuck spent the summer of 2015 traveling around Japan’s Sanriku coast, documenting every available tsunami stone in photographs, maps, and satellite views, and accumulating seismic and geological data about each stone’s local circumstances.

The end result was a book called An Incomplete Atlas of Stones. It was inspired, she writes, by “a combined interest in warning systems and cartography.”

[Image: From An Incomplete Atlas of Stones by Elise Hunchuck].

“Rising from the earth,” Hunchuck writes in the book’s introduction, “many [of the warning stones] were placed in the landscape to mark either the height of the inundation line or to mark territory above the inundation line.”

They formed a kind of worst-case boundary line for where solid land meets the sea, the known limit of catastrophic inundation.

[Images: Spreads from An Incomplete Atlas of Stones by Elise Hunchuck].

The book introduces each stone taxonomically:

Each tsunami stone is introduced by its geographic coordinates: latitude, longitude, and elevation. Latitude and longitude site each stone on the surface of the earth while elevation situates each stone in relation to the mean level of the sea. The stones are further situated; first, by the boundaries of the village, town, or city they are located within; second, by their administrative prefecture; and, third, their geographical region. As each stone has been erected in response to a major tsunami, both the year and name of the tsunami is listed in addition to the stone’s relation to the inundation line (below the line, on the line, or above the line) of both its target tsunami and the tsunami of 2011. Each stone, at the time of its erection, was engraved with a message. The stones mapped in this atlas may be considered as belonging to one of two categories: as a memorial, commemorating people and places lost to an earthquake tsunami, or as a lesson, providing a description of events and directions as to where to build, where to evacuate to, and where waters have risen in the past.

Each stone or set of stones thus gets a four-page spread, giving the book a nice structural consistency.

[Images: Spreads from An Incomplete Atlas of Stones by Elise Hunchuck].

As you can also see, satellite shots are used to show the landscape at different states in time: one depicts the coastline immediately following the 2011 tsunami, the next then showing the same locatio after up to five years of rebuilding have taken place.

In some of these comparisons, seemingly nothing at all has changed; in others, it appears nearly the entire landscape has been consumed by forests.

[Images: Spreads from An Incomplete Atlas of Stones by Elise Hunchuck].

The entire book is nearly 250 pages in length, and the selections I’ve chosen here barely scratch the surface. The material Hunchuck has gathered would not only be served well by a gallery installation; the project also sets up an interesting formal precedent for other documentary undertakings such as this.

Given my own background, meanwhile—I am a writer, not an architect—I would love to see more of a reporting angle in future versions of this sort of thing, e.g. interviews with local residents, or even with disaster-response workers, connected to these landscapes through personal circumstance.

The narratives of what these stones are and what they mean would be well-illustrated by more than just data, in other words, including verbal expressions of how and why these warnings were heeded (or, for that matter, fatally overlooked).

[Images: Spreads from An Incomplete Atlas of Stones by Elise Hunchuck].

In any case, the title of Hunchuck’s book—it is an incomplete atlas—also reveals that Hunchuck is still investigating what the stones might mean and how, as a landscape architect, she might respond to them. Her goal, she writes, “is not to offer an explicit response—yet. This incomplete atlas shares the stories of seventy five places, each without a definitive beginning or end.”

Along those lines, I’m reminded of a geologist quoted by the New York Times in their own coverage of the megaliths: “We need a modern version of the tsunami stones.”

Stay tuned for Hunchuck’s forthcoming website with more about the project.

(Vaguely related: Boundary Stones and Capital Magic and, to a certain extent, Watermarks.)