This ruined castle perched atop a rocky peak is a great place for a hike.

A perfectly preserved hill village where the buildings are painted like white lace.

Fast food feels like fine dining at this award-winning modern Georgian building.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

Tower with a double-helix spiral, adorned with letters of the Georgian alphabet.

The first skyscraper to include a Ferris wheel built into the facade.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

This "floating railway" is one of the world's oldest monorail systems.

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

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

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

An industrial relic is now one of Europe's most staggering art spaces.

The world's biggest pet store.

This former steel and coal plant is now a neon-lit industrial fantasia.

No need to strap in for a “ride” on this walkable roller coaster.

An abandoned underground bathroom is now a space for public art.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

This abandoned Belgian fortress is purposefully being left to nature.