These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Stay in a room with a view... of the bottom of the ocean.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A fitting attraction for the corn capital of the world.

European castle ruins in an American state park are actually the product of death and grief.

This historic cliffside mansion uses a natural cave for air conditioning.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

Curious cave that stays a cool 56 degrees all year long.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

This giant green head remembers one of America's jazz giants.

Community bookshelf of 25-foot-tall book spines.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

A small town garden is dedicated to a psychic dog with the most soulful eyes.