This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

The angel of death appears to weep black tears at this grave marker.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

One of only two commuter aerial tramways in the United States.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The world's longest known cave system.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A beautiful geyser under environmental threat.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Ride the subways of yesteryear.

A dilapidated dock tells the story of Titanic's missed arrival.

This abandoned amusement park was built on a site with a dark history.

The only rotating bar in New Orleans has been slowly spinning since 1949.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Eighteen miniature death-scene dioramas.

This shop for all your super spy needs hides an educational secret.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.