A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A psychedelic labyrinth on the San Francisco bay.

A collection of full-size movie monsters opened to the public.

A museum dedicated to the alleged Roswell Incident.

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

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Eighteen miniature death-scene dioramas.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

A priceless collection of the Nation's cryptologic history.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

The trials and tribulations of marking Poe's grave.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Barbies stare from the walls, sit on the tables, and even pop out of cakes at this quirky cafe.

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

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.