This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

The monumental home of Prussia’s eccentric "Cannon King."

This painted Lego bridge is the product of over a century of locomotive history.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

This medieval castle was painted pink as part of a now-abandoned children's theme park.

Abandoned since 1998, this train station has become an oasis for urban explorers.

This abandoned Belgian fortress is purposefully being left to nature.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

This bike path traverses the treetops.

This plaque tells the story of an event that took place in an imagined parallel universe.

These enlarged egg sculptures represent the native birds of eastern Iceland.

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

A lonely beacon, precariously perched atop a remote sliver of rock.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

The oldest church in Iceland is one of the few to feature ornate decoration.

Walk in the footsteps of the gods and straddle two tectonic plates.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This modern monument to pagan belief looks like it was transported straight from ancient times.

This greenhouse was once a hockey arena.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.