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

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Denmark’s never-ending bridge.

Residents of this seaside village are building a miniature 1:10 scale version of their historic town.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

This cheese shop also houses a museum devoted to Dutch dairy.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

This natural rock formation features seemingly unnatural vertical ridges that have been blamed on elves.

This elegant arc of a waterfall marks a religious turning point.

An Icelandic island full of diving birds and legend.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This series of Scottish caves has no clear purpose other than baffling historians.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Intensely colorful calcite pools in Southern China.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A collection of abandoned typographic signs from Berlin and beyond.

A curious collection of mechanical moving figures.

Hotel designed by indie graphics artists.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

A private collection of massive steel monsters guarding a Texas pipe works.