A 1:2 billion-scale solar system leads visitors into this German university town.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The subtle science of a master molecular gastronomist.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

A display of magnificent stained glass windows is the first exhibit of its kind.

A curious collection of miniatures in a quiet corner of the Chicago Children's Museum.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Super-heavy Nazi architectural experiment.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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

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

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

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

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

A celebration of capitalism in Midtown.

From scholastic to sepulchral - now under reconstruction.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Become a prohibition rebel.