A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

The celebrated eyesore created by starry-eyed sweethearts.

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

Notorious artist squat renovated into legal studios.

A 12th-century fortress containing some of Berlin's oldest buildings.

The oldest trees in Northern Germany.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Go surfing on this urban wave, "hacked" by local surfers.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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

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

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

This "floating railway" is one of the world's oldest monorail systems.

Modest by day, illuminated majestically at sunset.

An abandoned settlement originally established by British colonialists in the Andaman archipelago.

A centuries-old fortress city lies in ruin.

An extraordinary "City of Caves" carved from solid stone.