Salt cured mummies continue to turn up in this Iranian mine.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.

Small church on top of a huge rock column.

Underground monastery and fortress.

A museum glorifying the life of Stalin, located in the city of his birth.

Unusual building appears to be haphazardly built from randomly piled bricks.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

Gargantuan home of Russian science.

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.

The tallest hotel in Europe.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

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.

Former headquarters of the KGB.

Home of the future Emperors of Russia.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

Moscow's imposing monument to the Space Age.

Stalinist skyscraper built with help of cryotechnology.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Romania's triumphal arch looks out over Bucharest.