The first artificial white water river course in North America cuts right through an Indiana city.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This natural spring is the winter home to the largest gathering of manatees in the world.

Approximately 65,000 gallons of crystal clear water pour out of this headspring every minute.

This former factory has been transformed into a technicolor wonderland, where dozens of local artists have collaborated to create a real choose-your-own-adventure experience.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

This home is decked out like a psychedelic explosion of colors and bowling balls.

Where manatees are the snowbird vacationers in these balmy Florida springs.

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

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

Two men, two visionaries of Venice Beach, one little hotel that smells like cookies.

An increasingly eccentric apartment building, topped with winged beasties.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

A master of deception, Harry Houdini's greatest trick may have been living in two places at once.

This grand mansion has starred in everything from Bones to Buffy.