An eerie, derelict amusement park in Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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

Where once there was a train station bathroom, there is now this German burger joint.

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

Super-heavy Nazi architectural experiment.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

A monument to the man who almost killed Hitler.

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

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

A whimsical bridge adorned with decorative dragons.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

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

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

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

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.