The first mosque in Ghana is known as the "Mecca of West Africa."

An eerie, existential museum dedicated to the author of "The Metamorphosis."

An unexpectedly extraterrestrial room in a former Victorian resort club.

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

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

The original "capsule building" is a masterpiece of Metabolist architecture.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A giant robo-cockroach building devours Tokyo.

The largest greenhouse in the world is home to over one million types of plants.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

400-year-old garden, restored to beauty.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

This house's itty bitty size means no humans allowed.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

Countless grotesque faces stare out from this eerie Prague art wall.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

Extraordinary sculpture garden created by an eccentric English poet.

A popular swimming hole that hides one of America's most deadly diving spots.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

This floating cinema brings new meaning to the phrase "going out" to the movies.