Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

A rare view of a preserved Victorian science museum.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.