Home to 200 plaster casts of Scandinavian proboscises.

This remote British Imperial telegraph relay outpost drove men insane.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

Modern sundial uses ancient methods to tell time and date perfectly.

A house carved into a rock in the 1940s.

An antiquated German apothecary on Chicago's North Side.

An enormous, inside-out glass globe built in 1935.

An avant garde art museum at the University of Chicago.

The world's largest Tibetan refugee settlement.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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

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

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

Radical Bookstore and Community Space.

The restored and active Victorian-era final resting place of San Francisco.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

One of the best collections of wax anatomical models in the world.

Statue of a decomposing prince that once held his heart in its hand.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Abandoned concert venue legendary for its rock counterculture.

A beautiful and classically designed villa, with an hourly infestation of monsters.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

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