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

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

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

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Peek through a transparent pyramid and drink in the mountain made of books.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Architectureal fantasy quarter of Rome.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

One part antique store, one part curiosities hodge-podge.

The hallucinogenic center of the ancient world.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

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

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A mechanized clock where a man fights off a dragon, crab, and rooster.

Renaissance villa and gardens complete with a tormented colossus.

The celebrated eyesore created by starry-eyed sweethearts.

A museum dedicated to the alleged Roswell Incident.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Natural time capsule containing an alien ecosystem.