One man has spent decades faithfully constructing this unique brick and cinderblock castle.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

Colorful, cheeky signs spill out of legendary New Orleans folk artist Dr. Bob's Bywater studio warning you to "Be Nice—Or Leave."

Like Mars, but much closer.

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Georgia’s last drive-in movie theater is a relic of a bygone era.

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

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The largest self-built castle in the U.S., six decades in the making.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Vintage cars and motorcycles race for glory in a throwback motorsport celebration on the Jersey shore.

Step inside Lucy, the world's largest "elephant."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

The first American axe throwing club.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

This elaborate towering structure was once famed for its revolutionary height.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.