A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

The phone booths of New York City have all but disappeared, but their remains were once found in this "graveyard," sadly now removed as well.

This failed condo development was reborn as a street art hub.

Ruins of an American Civil War iron forge still survive today.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

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

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

A haunting tribute to pioneering photographer Clover Adams.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

The 40-foot-tall votive candle is the largest of its kind.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

"I did this all while you were watching TV."

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A cave's rare beauty held a cavernous secret hidden underground.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

Crumbling hotel echoes with the sounds of the '30s.

It specializes in outsider art and artifacts of secret societies.