A clear example of the process of erosion in action.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Cold war icon and onetime "hole" in the iron curtain.

Berlin's old airport.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

France's most famous cemetery, with some of its most curious tombs.

Elevated freight railway turned wildly successful urban park.

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

Walk through a restaurant's refrigerator door to reach this hidden bar.

A historic observatory precariously perched at the "Top of Europe."

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Large Hadron Collider and the Birthplace of World Wide Web.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.