The District of Columbia is 67 square miles and divided into 4 quadrants: Northwest, Southwest, Northeast and Southeast. The U.S. Capitol building marks the center where the quadrants meet. Numbered streets run north-south. Lettered streets run east-west (there are no J, X, Y or Z streets), becoming 2-syllable names, then 3-syllable names as you travel farther out from the center. Avenues named for U.S. states run diagonally, often meeting at traffic circles and squares. (USA State Directory)Washington, DC was founded on land ceded from Maryland and Virginia so that the seat of government wouldn't be in any one state. Most of DC's Southwest quadrant was given back to Virginia in the early 1800s and is now Arlington, Virginia.
the ability to move troops around to crush dissent
Like Nara, its predecessor, Kyoto was modeled after the Tang Dynasty Chinese capital of Changan: rectangular, with straight, bisecting streets and the imperial palace in the northeast corner. But unlike Nara, a limit was placed on Buddhist temples to keep them from overwhelming the capital (one of the possible reasons the emperor moved the capital from Nara to begin with).But the grid pattern goes way back beyond that: "The regular grid plan for cities in the Greek world was perhaps an invention of the 7th century BC, as a means of laying out new colonies evenhandedly, and using simple instruments and eyesight." It was popularized by Hippodamus of Miletus in the 5th century BC.
Carfree describes a streetcar-oriented topology that you might call "strings of pearls"
Houston is organized (if that's the right word) around concentric loops, but it's really more like a malignant tumor.
Tokyo's city layout is perverse: the Imperial Palace (formerly the Shogun's castle) is roughly at the center of town, and the streets were originally laid out to confuse invaders and send them past it. There are three main commuter-rail systems in the city today: The JR system has a ring route around what used to be the city limits and a central route that roughly bisects the city north-south. The Toei system has three routes that describe a triangle around the center of town, and the TRTA network is (very roughly) radial.
posted by adamrice at 11:28 AM on March 12, 2004