An eerie, little-known Neapolitan museum filled with preserved human remains.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This 135-year-old weather station studied the effects of the climate on human health.

Island wonderland for communist autocrats.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

An ancient knight and a symbol of the city's freedom.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

Longest fortress system anywhere in Europe.

A musical instrument played by the sea.

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

An ethereal glowing blue ocean cave in Croatia.

An apparition of Virgin Mary in Herzegovina.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

Oriental bazaar in the heart of Sarajevo.