Fifty-six years ago, about 30,000 people gathered in Philadelphia’s Fairmount Park for the first Earth Day rally April 22, 1970 — one of thousands across the U.S. In the post-war decades leading...

Across rows of classic red velour seats, a single bulb burns on the empty stage of Walnut Street Theatre. The ghost light, a tradition as old as theater itself, is said to keep the bad spirits out. As...

Across 6. Home to a variety of indoor food markets since 1892. 8. Located next to Dilworth Park, this place is the heart of Philly. 9. Where the founding fathers gathered in 1776 to sign...