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

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

Now abandoned, the world's first torpedo factory is crumbling into the sea.

A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

Gargoyle head that brings good luck.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

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

A musical instrument played by the sea.

Where the lovelorn find a home for their sentimental keepsakes.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

UNESCO-protected ancient burial ground.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This historic black and white monastery is one of Bulgaria's architectural jewels.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

A Serbian church lit by chandeliers made of weapons.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Structure built from the skulls of vanquished foes.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

This small Slovenian town has become a magnet for microbreweries.