The world's largest collection of ticks.

A modernist landscape of water and sci-fi concrete.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

One person's lost luggage is another person's treasure.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Venue for strange sideshow displays and musical acts.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Towering basalt columns, a creation of fire and ice.

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The United States Capitol's former columns still stand.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

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

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

World's largest collection of serial killer artwork and other macabre exhibits.