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

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

This symbol of Yugoslav liberation decorated with 620 carved heads of mythical creatures is now a forlorn relic of another time.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

Sealing couples' love since just after World War I.

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.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

The Slovenian architect designed many landmarks in the capital city, including his own dream house.

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

The "dragon babies" of southeastern Europe.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Humble beginnings for one of the world's most famous scientists.

Island wonderland for communist autocrats.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

The Renaissance-era courthouse is a relic from the fortified town's centuries of Venetian rule.

This massive subterranean fissure is known as the "underground Grand Canyon."

Where the lovelorn find a home for their sentimental keepsakes.

A miniature train-ride through Slovenia's largest cave system.

This one-time health resort was used by aristocrats around the world.

The world's most important buildings shrunk to a tiny size.