Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

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

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

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

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

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

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

Longest fortress system anywhere in Europe.

Gargoyle head that brings good luck.

The first mosque in the world to receive electricity.

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

Oriental bazaar in the heart of Sarajevo.

The unusual sculptures are believed to be powerful political symbols.

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

Sealing couples' love since just after World War I.

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

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

A misnamed well, with a deep dark past.

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

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

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

A pair of connected skyscrapers form this symbolic gateway.

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

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.