No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

The Earth's saltiest natural body of water belches toxic gas.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

Hamburgers are intensely proud of their tunnel beneath the river.

This Estonian watchtower looks like a big tree with two giant bird nests on it, complete with a "golden egg."

The wooden sculptures are studded throughout a small New Zealand town.

The narrow passages will challenge even the bravest driver.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

An important Mayan religious and trading center dating back to 200 BC.

Step back in time and witness the fall of Constantinople.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

An otherworldly alpine pasture in Slovenia with historical ties to WWII and architecture that recalls Middle Earth.

This cutting edge museum details the history of skiing, from its ancient origins to its status as a sport.

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

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.

A cemetery for Slovenian notables also serves as a popular recreation space.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

This abandoned Slovenian military barracks has become a punky-political art squat.

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

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.