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

A house carved into a rock in the 1940s.

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

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Where America's first doomsday cult awaited the end of the world.

Home of an evil witch famous within southern folklore.

A beautiful Victorian-era cemetery, complete with a miniature village.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Enormous lake at the bottom of a unique cave system.

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

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The United States Capitol's former columns still stand.

A one-of-a-kind collection of a unique medium.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A giant Troll lurks under one of Seattle's oldest bridges.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.