What was once a bustling mining installation is now a bustling hub of contemporary art.

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

Most prolific publishing house in the 1600s open to the public.

Housing the groundbreaking maps and globes of Gerard Mercator.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A little sculpture with a large wardrobe.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The Habsburgs' royal collections of art and wonders.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

The most decorated dog of World War I is preserved in the Smithsonian.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A bit of retro transportation flair preserved in the world's largest department store.

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

Stalinist skyscraper built with help of cryotechnology.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

Moscow's imposing monument to the Space Age.

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

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

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

Museum celebrating the achievements of the Soviet space program.