Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

Medieval torture techniques with a modern conscience.

This collection of artifacts represents one family's mission to record the horrors of World War II inflicted on their hometown.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

An autonomous republic of Orthodox monks.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Private collection of art inspired by cabinets of curiosity.

An emporium for the weird, creepy, rare, and just plain gross.

A world of craftwork elegantly curated in a historic brick warehouse.

The seamy, underground secrets of Portland's criminal past.

The mummified relic of St. Antoninus.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The largest and most famous wax anatomical collection anywhere in the world.

Anatomical cabinet holds unexpected treasures.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.