Native Americans built this circle of stones, which was used to predict astronomical events.

This 80-year old mannequin is so lifelike it is believed to be an embalmed corpse.

A medieval fresco which reminds visitors that death will come for us all.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The mark of the Devil's horns on a marble column in Milan.

A Nesting Doll of Churches.

Jesus' footprints and the first catacombs in the world.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Architectureal fantasy quarter of Rome.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

A hip bar decorated with walls of golden skulls.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

An abused and forgotten metropolis, abandoned for centuries.

Craft liquors concocted in an old Seattle warehouse.

A curious friendship between two inanimate ladies.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

Science fiction's grandfather has a fittingly marvelous tomb.

This massive marble memorial was built bit by bit either out of devotion or spite, but at the expense of the surrounding town.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

An abandoned asylum where patients have been forgotten but their possessions remain.

For over 300 years this little carving has been the city’s good luck charm.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.