What happens when you cross a mayor and a painter?

A museum dedicated to secret surveillance.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

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

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

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

Oriental bazaar in the heart of Sarajevo.

A monument on the pavement marks the spot where two cultures that shaped Sarajevo come together.

The first mosque in the world to receive electricity.

The place where World War I began.

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

Bridge that died in war and was resurected.

Carefully reconstructed after the Bosnian War, this 16th-century bridge stands as a symbol of the country's enduring multicultural heritage.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

A museum dedicated to the former country.

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

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

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

This striking, historic hotel has major Wes Anderson movie energy.

This small bronze pyramid marks the center of Belgrade, but some say it is a Masonic symbol.

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.

A misnamed well, with a deep dark past.