The scuba diving training facility was named for the steam that rises from the cave's chimney.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

An underwater city for the dead.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

35,000 grape hyacinths flow like water down a garden hill.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

No one really knows how these old hobby horses got here, but the herd keeps growing.

A cave dug by a man directed by ghosts to find pirate treasure.

A historic bridge with a lovely acoustic anomaly.

Over fifty whirling pools left by the glacial age.

A beautiful Victorian-era cemetery, complete with a miniature village.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.