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

A technicolor place of worship for Elevationists.

Shop selling 500 flavors of soda has something for everyone.

A semi-scholarly approach to sex.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

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

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

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The legendary building that needed ghostly approval before being built.

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

A 140-year-old castle with underground caves hidden in San Francisco.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.