A mental health hospital dating back more than 139 years, now features a museum.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

This 19th-century ranch is being transformed into a residential library with thousands of books about the natural world.

The home of a formerly enslaved man who went on to become a prospector, entrepreneur, and activist for Black rights.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

Birds with backpacks expedite film development for a rafting company on a remote Colorado river.

The world's largest washing machine collection has more than 1,400 antique items in its exhibit.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

A research lab and hands-on museum where visitors can experiment with retro technology.

This eclectic collection documents the wild legacies of "America's Wickedest Street."