Whimsical wash tubs row down the stream as part of this Carnival celebration.

Home to the world’s oldest seismograph and a four-ton steel ball that makes its own earthquakes.

Largest illuminated advertisement sign in the world.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

This magnificent church allows travelers along one of Germany's busiest roadways a chance to rest and reflect.

This German museum devoted to the simple wonders of salt is actually built over an old saltworks.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

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.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

A crumbling bakery where forced laborers from the nearby concentration camp toiled to feed their fellow prisoners and Nazi soldiers.

The scars of World War II are preserved on its walls.

This giant, 83-year-old ship elevator is an engineering feat to behold.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

One of the most iconic neon ads of former East Germany.

A rare chance to ride one of the few continuous elevators still in operation.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

This German "living museum" is maybe a bit too immersive.

An abandoned train station in Munich constructed for the 1972 Olympic games.

The only remaining U-boat that is still floating never actually saw any action in World War II.

A steam powered train that runs on city streets.

1898 German railroad depot museum with working engines, steam train excursions, and hands-on displays.

Remnants of a cone-shaped Nazi bomb shelter.

A subterranean display of public art and architecture.