A library of only unpublished manuscripts.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

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

"The most colorful grottoes of the world.

An intricate and amazing house built by architect Karl Junker.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

A wunderkammer of mysterious objects and stories.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

Honor one of Argentina's most prolific writers at his historic home.

A mysterious architectural gem in one of the most elegant areas of Buenos Aires.

Trash-filled shrines to an unofficial saint known for her endless breast milk dot the highways of Argentina.

Crumbling crypts and overgrown graves rise just out of arm's reach in this forgotten Buenos Aires graveyard.

This magnificent abandoned hotel has long been haunted by its Nazi past.

One man's quest to collect artifacts from every aspect of human life has resulted in this eclectic Argentinian museum.

This Argentinian hedge maze is an intricate tribute to a famous surrealist author.

A neo-Gothic castle in the Argentinian countryside.