What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

This is not your typical jungle gym.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

An outsider art studio that created a piece of work so popular they had to turn mainstream.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

An old abandoned pharmacy building in Texas is brimming with collectibles and images of the little tuxedoed pooch.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

A Prada store in the West Texas desert that is never open for business.

Mysterious glowing orbs float through the desert night.

One part antique store, one part curiosities hodge-podge.

A modernist landscape of water and sci-fi concrete.

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

Continuing the tradition of the dime museum in style.

An emerald-green grotto just a short trip from Austin.

Sitting in the arguable birthplace of the Wild West, this museum holds the largest collection of bronco busting bric-a-brac in the world.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

A wonderful collection of all things Oz is nestled in the heart of Kansas.