The only structure left with direct ties to the Salem witchcraft trials of 1692.

Century-old shop, specializing in Occult products.

A legendary boxing venue and ring featured in Rocky V.

This beloved marketplace mascot poops money and grants good luck.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

A daily replay of the experiment that proved the rotation of the Earth.

Yo, Adrian!

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A rare view of a preserved Victorian science museum.

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

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

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.

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

World's first "penitentiary," meant to be humane, drove men insane.

An unsolved murder victim's grave which may or may not contain her body.

This 19th century granite fortification is one of the most well preserved forts in New England.

On Hurricane Island, a former ghost town has been transformed into a forward-thinking research center.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.