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

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

A collection of abandoned typographic signs from Berlin and beyond.

This classic restaurant features a gorgeous mirror-clad room.

A slice of central Asia in the middle of Berlin.

An eerie, derelict amusement park in Berlin.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

Rebuilt remains of a temple to Roman god Mithras.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

This hidden art nouveau gem was designed by an architect in search of a national style.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Once the home of a hermetic monk, this cave now houses a small church.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The avant-garde design was able to bypass strict Soviet regulations on architecture.

The California secessionist movement has its own foreign embassy, in Russia of all places.

One of the largest collections of socialist realist art shows the surprising depth of the official art of the Soviet Union.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.