The mysterious round rocks of Schooner Gulch.

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

Denmark’s never-ending bridge.

The largest drain hole in the world.

A technicolor place of worship for Elevationists.

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

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

The largest outdoor art gallery in the Northwest United States.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

This museum glorifies the humble potato.

See just what life was like in a 19th-century prospecting town.

The mayor made the declaration in 2004.

Home to the deepest rift anywhere on Earth.

This oddity shop contains everything from antique tools to a human skeleton.

A miraculous natural phenomenon known as "the spring that breathes."

This town is home to the world’s largest arch constructed entirely of elk antlers.

Largest gathering of hobos in the country has been meeting annually since 1900.

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

The Iowa state contender for largest pan in the world oddly only comes in second or so.

Eight feet in diameter and more than 24 feet around.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

This zombie-themed restaurant stands out in the heart of corn country.