One of downtown Berlin's last reminders of its Communist past.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

A century-old shot ball factory tower is open to the public once a year.

One of the oldest cemeteries in Germany was originally used for victims of a cholera epidemic.

Reminders of the Battle of Berlin still scar the railway.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

This woodland architectural installation acts as a camera obscura for the heavens.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

Things aren't quite what they seem at this mind-bending museum.

The secret meeting held in this building would forever change the world.

A window into the luxurious lives led by the landed gentry of Minsk before the 1917 Revolution.

A beautiful and moving memorial set on a little island in the middle of the river in Minsk.

This Russian diner is staffed entirely by twins.

One of the largest collections of socialist realist art shows the surprising depth of the official art of the Soviet Union.

An incredibly random collection of wax figures is displayed in a shopping center walkway.

A scale model of Russia so big visitors are offered binoculars to rent so they can see the whole thing.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.