A beautiful geyser under environmental threat.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

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

A beautiful 62-acre Catholic shrine and botanical garden.

The site of the climactic scene from the classic horror film is now a historic landmark.

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

An emporium for the weird, creepy, rare, and just plain gross.

The first declared National Monument in the United States.

A technicolor place of worship for Elevationists.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

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

Continuing the tradition of the dime museum in style.

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

A toxic ghost town sitting atop a massive coal fire.

Resting place of Hollywood's immortals is also site of summer film screenings.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A house carved into a rock in the 1940s.