A massive underwater sinkhole made famous by Jacques Cousteau.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

A ring of creosote bushes that are estimated to be 11,700 years old.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

This midcentury LA bar was the birthplace of tiki culture.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

An old California photo stand has been turned into a shrine to the cozy art of crochet.

An eclectic trailer park retreat in the middle of the California desert.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

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

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

The ghostly remains of an accidental sea.

A world-class observatory in the California desert.

This large collection of tiny things revels in the art of fine machinery well made.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

A Biblically-based Natural History Museum.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

Nancy Thompson's Home from "A Nightmare on Elm Street."