A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

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

A pair of connected skyscrapers form this symbolic gateway.

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

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

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

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

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

The place where World War I began.

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

A war-torn Olympic relic is being overtaken by graffiti and nature.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

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

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A giant portrait of an ancient king looms over the river.