Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

A large measuring stick marks the lowest point of a country that is partially under sea level.

Wooden pathways run through this rocky landscape, which legend says was created when a dwarven king pulled down his own castle to stop raiding giants.

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

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

A Nazi concentration camp and Anne Frank's place of death.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

There are two dozen tanks just sitting in an open field in Lower Saxony.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

Giant wind turbine with observation deck at the very top.

A museum dedicated to the silliest fruit.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A bike train runs along a disused railway line through the tranquil French countryside.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

Hundreds of dwarf beeches create an unusual, haunting forest in the north of France.

The world's largest boar is a huge steel titan found at a French rest stop.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

Most-visited and most-photographed slot canyon in the American Southwest.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An exquisite tunnel of cascading flowers.

Rippling sand dunes frozen in the Arizona rock.

On Japan's Tashirojima Island, cats are king.