This massive monument honors the first human in space.

Gargantuan home of Russian science.

A 360 degree battlefield experience.

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

This frozen-in-time summer home outside Moscow provides a look at Russian life in the 1950s.

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 tallest hotel in Europe.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.

Museum celebrating the achievements of the Soviet space program.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

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

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

One of the last remaining buildings from one of Calgary's earliest businesses.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

This First Nations monument is a peaceful spot with vast views of the Calgary prairie.

Skyscraper powered by wind turbines attached between its towers.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Museum devoted to the artificial language of Esperanto.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.