Huge masonic hall in Philadelphia with lavishly themed rooms.

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

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

A rare view of a preserved Victorian science museum.

The world’s first penitentiary, meant to be humane, drove men insane.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.