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

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

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

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

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.

This memorial complex contains several mass graves for victims of the Siege of Leningrad.

One of the world's tallest statues is also one of its most hated.

A 360 degree battlefield experience.

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

Moscow's imposing monument to the Space Age.

Former headquarters of the KGB.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A semi-scholarly approach to sex.

Amazingly, this old machine within the Resorts Casino still functions.

The oldest surviving presidential residence in the United States.

Its unique collection details the history of the state's svelte railroads.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

After just one epic test blast, this literal loose cannon proved too explosive for combat.