Ruins of a German Castle on top of a towering stone pillar.

The steepest classic funicular in the world glides along a dizzying incline.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

London's smallest police station is barely the size of a phone booth.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Museum devoted to the artificial language of Esperanto.

This cubist Vienna church building looks like some sort of alien stonehenge.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

One of Mother Nature’s geological gems, home to many prehistoric fossils.

The roadway bend where highway painters practice their craft looks like expressionist art.

Little island known for its massive beachfront "flowerpot" pillars.

These strikingly barren, rolling red hills were caused by bad farming practices.

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

WWII rocket launchpad in rural Germany and site of operation backfire.

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.