The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The rocks in this arid basin leave trails of movement behind them.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

An underwater city for the dead.

A 30-acre garden inspired by the principles of modern physics.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Two stunning 17th-century libraries and a cabinet of curiosities.

Eighty million natural history specimens call this gargantuan museum home.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Eighteen miniature death-scene dioramas.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

The fairy tale castle of the "fairy-tale king."

A museum dedicated to the history and exploration of both popular music and science fiction.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

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

Continuing the tradition of the dime museum in style.

Medicinal spa created with the discharge from a geothermal energy plant.

Stroll through a wonderland of stupendous moss-covered trees.