It commemorates one of the world's earliest telegraphs.

A statue of Vladimir Illyich Lenin guards this abandoned building in the "Forbidden City."

Hidden in the forest are the crumbling, graffiti-covered remains of the factory where most of Germany's explosives were produced during World War II.

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

Inside this unique festival hall, a slide leads guests down to a subterranean watering hole.

One of the oldest student jails in Germany.

This small gallery nestled inside an old botanical glasshouse is a quiet place to enjoy art and nature.

This highrise residential building looks mundane, but hides a water tower and WWII bunker.

The first recognized Neanderthal remains were found in this now-lost cave in 1856.

One of the largest busts in the world celebrates the German city's erstwhile namesake.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

This red London phone booth once stood in front of Buckingham Palace and was used by the queen.

Several of these strange cone-shaped bunkers can still be seen around the former Nazi headquarters.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

These abandoned Cold War-era bunkers are now a designated refuge for endangered bat species.

WWII rocket launchpad in rural Germany and site of operation backfire.

A ruined castle stands atop a hill surrounded by dragon lore.

Albert Einstein's head sticks out of a snail shell stacked on a rocket in this truly bizarre monument to the scientist.

One of the largest legal spray spots in Hamburg.

The unusually large seat sits atop the base of a ruined temple.

The final resting place of the famed German pilot, the "Red Baron."

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

Oberweissbacher Bergbahn - a broad-gauged cable car capable transfering railcars.