Started as a kitchen garden, now the second largest botanical garden in the world.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

It's always summer at the beach inside this former airship hangar.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

Terrifying derelict military hospital once housed a recuperating Hitler.

The "Prussian Versailles" that is as glorious today as when it was built.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

A quaint Russian village in the middle of a German metropolis.

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

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

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

A sweet museum focused on beets.

A wunderkammer of mysterious objects and stories.

Metro station with a claim to rock n' roll fame.

Super-heavy Nazi architectural experiment.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.