One of the notorious Soviet leader Joseph Stalin's many summer retreats.

An abandoned mansion is now a haven for urban explorers.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A man-made island fort that has housed soldiers, scientists, and ravers.

One of the most well-preserved mammoth specimens in the world.

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

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

A model village fit for an emperor.

An abandoned 14th-century castle and prison complex on a small island in the Neva River.

300-year-old villagers houses and traditional churches preserve a nearly lost piece of Russian history.

Thousands of biblical and pagan images are carved into this small 12th-century church.

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

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

Home of the future Emperors of Russia.

The "Mystery and Company of Merchant Adventurers" is an Elizabethan-era hangout in Moscow.

This Russian locomotive museum was once devoted just to Lenin's funeral before expanding to encompass Moscow's entire train history.

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

Stelae-eyed stones greet visitors to a corner of Kirov Park.

This cuddly rodent has a place of honor at a Russian institute for genetic research.