The Infrastructure Atlas
Maps begin explaining causation when you connect physical geography to transportation networks: river port → transcontinental rail junction → interstate interchange → global air hub.
One Railway, Three Maps.
Follow the elevated Loop through a public-domain street map, an original schematic, and a bird’s-eye plate. Open the comparison →
The Infrastructure Atlas: Why Did This City Grow Here?
Cities are not accidents of nature. Maps begin explaining causation when you trace how river ports became transcontinental rail junctions, interstate highways, and air logistics hubs.
Chicago: The Great Continental Switchyard
Why did Chicago grow here? A 2-mile portage between Lake Michigan and the Illinois River became the Illinois & Michigan Canal, which drew 30 competing railroad lines into the greatest rail bottleneck on Earth.
Chicago Portage connected Atlantic/Great Lakes shipping to Gulf of Mexico barge networks via I&M Canal.
Union Stock Yards and 30 separate railroad companies made Chicago the mandatory interchange point where Eastern and Western tracks met.
I-80, I-90, I-94, and I-55 converged, creating the primary Midwestern truck freight transfer corridor.
O'Hare International Airport (KORD) expanded to 8 runways, anchoring global air cargo routing.