This pyramid in southern Sweden houses the remains of an eccentric nobleman, who spent his life doing whatever he felt like doing.

This Swedish automobile graveyard is a beautiful gallery of decay, but woe be to any who would steal a souvenir.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

The world’s largest knitted mitten is displayed in one of Sweden’s smallest Arctic villages.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A beautiful maze marks where three countries meet.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

Rising from the sea like a stone monster.

An alien landscape on the banks of the Aegean Sea.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

Danish observation tower designed to look like a giant beer bottle.

Digger attempting to hide itself under 300 tons of rubble.

A walkable map of the world, made from soil and stone by one man.

An ethereal glowing blue ocean cave in Croatia.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

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