The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

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

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

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

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

A historic presidential getaway on the continental United States' southernmost island.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

A community of collapsing homes more than a mile out from the Florida coast.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Elevated freight railway turned wildly successful urban park.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Enormous lake at the bottom of a unique cave system.

A bizarre roadside attraction and the first instance of miniature golf in the world.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

Where monkeys run wild and the humans are caged.

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

At 207 feet, one of the world's longest continuous escalators.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

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

Location of a reliquary containing bone fragments of 18 saints.