Map of Underground Pedestrian Concourses in Philadelphia

Courtesy this post on Philadelphia Will Do, I found out about this reconstruction of the map of the underground pedestrian concourse in center city. The concourse requires no fare and connects the Market-Frankford Line, the Broad Street Line, and the PATCO line, making it possible to do neat shit like walk from 12th and Locust to 17th and Arch entirely underground.

There also exists this map, which I found a little while back on the website for the Center City District and Central Philadelphia Development Corporation.

The differences between the two maps are minor. The CCD map makes note of who services the concourses (SEPTA, the city, or "other"), while the reconstruction includes the entrances for the concourses and also maps out the concourse north of Cherry to Race St.

• Reconstructed map
• CCD map