A unique museum dedicated to the famed Soviet director and other cinema greats.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The most visited, and possibly most controversial, museum in Germany.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The oldest stone house in Paris was built by its most famous alchemist.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

A restaurant and observation deck built in a unique broadcasting antenna.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A wunderkammer of mysterious objects and stories.

Art and a pun, all in one.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Reverend Jen's unique museum/living room showcases her troll collection.

Wine bottle sculpture with a ship's stateroom inside.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Ride the subways of yesteryear.

Mysterious 500-year-old tapestries depict a unicorn hunt.