Urban walks in Philadelphia

Colonial cobblestone mews, hidden residential courtyards, and deep forested gorge trails right within city limits.

A wilderness canyon inside city limits, with schist cliffs, historic ruins, and America's only covered bridge in a major city.

Cobblestone pedestrian alleys, 18th-century courtyards, and greenway cuts behind historic churches.

Wooded cliffside trail overlooking the Schuylkill River, historically used for training by champion fighters.