When it comes to maps and geography, Chicago is a tremendously satisfying city: a well-organized grid, easily navigable with minimum coordinates. “Chicago, you might say, is the Sagres of the American imperium, a hub of geographic and cartographic expertise,” wrote Nick Paumgarten in the New Yorker, in a piece about the history of the form. “This is due mainly to Chicago’s role, in the nineteenth century, as a major railroad center.” Underneath that grid, though, is the chaos of the underworld: gas, electricity, water. And it can be dangerous.  Read More