Zoo Junction is a junction on Amtrak's Northeast Corridor in Philadelphia, Pennsylvania, where the Northeast Corridor meets the Keystone Corridor, previously known as the Pennsylvania Railroad's Main
The south portal of the 36th Street Tunnel used by SEPTA Regional Rail, where two connecting tracks from 30th Street Station's upper level run under the Keystone Corridor tracks, connecting to the Northeast Corridor tracks
A 1977 photo of Zoo Junction with the Northeast Corridor visible on the right, the Schuylkill River in the background, and the Philadelphia Zoo on the right.