These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Venue for strange sideshow displays and musical acts.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

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

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A self-built castle made by a mysterious man.

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

Cat art as far as the eye can see.

A curious collection dedicated to human and animal anatomy and pathology.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

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

A psychedelic labyrinth on the San Francisco bay.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.