Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Unique collection containing a wide and curious range of contraceptive items.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

On a wall in Cleveland, Ohio find the story of a highly connected fictional community of organisms that created remarkable, lasting structures.

The angel of death appears to weep black tears at this grave marker.

Medical history museum featuring a lovely doctor's office from the 1800s.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

The ruins of the suspension bridge hang over Kingsbury Run as a ghost of racial prejudice.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

Landmark dedicated to the plight of the American Indian in the 21st century.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

Macabre museum devoted to historical Viennese murders.

A curious collection dedicated to human and animal anatomy and pathology.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

An ancient artistic garden parlor full of hidden water wonders.

David Sedaris called it "The greatest shop in the world."

Museum devoted to the artificial language of Esperanto.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Double spiral staircases are not unheard of, but they are very rare.