A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

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

This attraction was abandoned after the Chornobyl disaster.

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

A huge Soviet-era robotics factory in the outskirts of Prypiat, now long-abandoned.

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

This derelict superstructure was a very important warning system for the Soviet military.

World's largest bell sits on the grounds of the Kremlin in Moscow.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Replica of mosque destroyed by Russia in the 16th century.

Russia's giant concrete QWERTY keyboard is likely the largest in the world.

Church built on the site where the last tsar of Russia and his family were killed.

The largest-known fragment of an asteroid that exploded over the southern Ural region in 2013.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

A unique museum dedicated to culture and artistry of carpet weaving.

The world's largest KFC restaurant is housed in a historic railway station in Azerbaijan's capital city

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A monument to the defenders of the Arctic in Murmansk, Russia.

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

Kakadu National Park is known for its stunning beauty and its rock art, which represents the longest historical records of any continuous civilization on Earth.

Clusters of huge boulders in the Australian Outback.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.