The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Budapest's Communist-era statues, banished to the suburbs.

Museum dedicated to the terror regimes of Hungary.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Oriental bazaar in the heart of Sarajevo.

A misnamed well, with a deep dark past.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A pair of connected skyscrapers form this symbolic gateway.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

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

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

The place where World War I began.

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

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A Serbian church lit by chandeliers made of weapons.

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