This exquisite, alienesque piece of Soviet architecture is being threatened by modern shopping malls.

The dining hall that nourishes workers in Chernobyl's Exclusion Zone is also open to visitors.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

340-foot statue built to honour the Heroes of the Soviet Union.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Mysterious standing stone formations looks like a petrified forest.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

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

Floating swimming pool within a moored vessel.

You've probably seen these distinctive orange-tiled columns on the big screen.

This monumental work of art symbolizes the coming together of a previously divided city.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

One of the world's heaviest musical instruments towers within a popular urban park.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

One of downtown Berlin's last reminders of its Communist past.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

When German-Iraqi relations broke down, this embassy was vacated post haste.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

Berlin's old airport.

Super-heavy Nazi architectural experiment.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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