Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

This little museum in the town where zombies were born celebrates the living dead.

The only diamond mine in the world where you can keep what you find.

More than five miles of underground passageways.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

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

One of the oldest living oak trees in the Southeast.

Visit this playground of waterfalls, caves and sinkholes.

A piece of outsider public art accompanied by a strange urban legend.

Outsider art meets paleontology at this roadside reptile repository.

Moonbows over Kentucky.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

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