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

The interior of this Serbian royal family's mausoleum is covered with exquisite mosaics.

Structure built from the skulls of vanquished foes.

The first mosque in the world to receive electricity.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

This historic cemetery was inaccessible for several years due to dozens of land mines.

Oriental bazaar in the heart of Sarajevo.

Bridge that died in war and was resurected.

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

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

Built as an anti-fascist tribute, this surreal Yugoslav memorial became an unwelcome symbol after the Croatian war for independence.

Island wonderland for communist autocrats.

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

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

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

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

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

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Where the lovelorn find a home for their sentimental keepsakes.

A musical instrument played by the sea.