A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

A former utopian healing center created by a huckster and built by derelicts.

In this century-old literary safehouse, print is alive and well.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Rainbow-hued local gem in Venice.

America's most famous piece of self-built architecture.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The legendary building that needed ghostly approval before being built.

The private clubhouse for the members of the Academy of Magical Arts.

A modern day curiosity cabinet.

The remnants of a failed socialist commune can still be found just off a California highway.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The tiniest tiki room in San Diego.

In the country around Buttonwillow, California, a marker commemorates a revealing moment in the story of a water colony from the fictional Kcymaerxthaere that sought independence.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

A free, public museum dedicated to the fascinating science of sight.

Its buzzing collection honors vibrator history.

A famous alternative culture epicenter and where Joplin serenaded young hippies.