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

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

A remarkable two-country morph, this town is part of Germany legally but is by all other measures Swiss.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

The telescope that discovered Neptune.

A Neolithic celestial calendar standing in a nondescript wheat field.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

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

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

A Saxony castle houses one of the largest and most outstanding mineral collections in the world.

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

Nestled within a German forest is an intriguing, growing rock.

A steam powered train that runs on city streets.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

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

This futuristic German television spire is actually the world's largest digital clock.

A delightful but little-known public observatory and planetarium in Munich.

Remnants of a cone-shaped Nazi bomb shelter.

A historic steam train meanders along one of the most scenic rail routes in Germany's Black Forest.

Giant wind turbine with observation deck at the very top.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

Fantastic views and thousands of love locks.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.