This only museum in the world dedicated solely to mushrooms.

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

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

A forgotten monument to Yugoslavian freedom.

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

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

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

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

Longest fortress system anywhere in Europe.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This huge metal monument is slowly being stripped to its concrete skeleton.

Gargoyle head that brings good luck.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

Yugoslavia's biggest underground airport lies in ruins.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

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

Where the lovelorn find a home for their sentimental keepsakes.

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.

This former railway facility is the oldest in Slovenia, and now houses a museum showcasing the history of steam locomotives.

A crumbling World War I fort that is reached through a series of concrete tunnels.

Nibble as you learn about Slovenia's longstanding tradition of making beautiful honey cookies.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

The "dragon babies" of southeastern Europe.