This massive subterranean fissure is known as the "underground Grand Canyon."

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

Germany's longest suspension rope bridge.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

Tiny castle in the middle of the Rhine made you pay to pass.

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

This ancient oak tree plays matchmaker for singles willing to branch out from the usual dating scene.

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

This watchtower once presided over the Berlin Wall.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

The stones of this formerly witch-obsessed castle were used to build a church.

A meteorite-bounded town in Bavaria.

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

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The many—66 to be exact—faces of the German forest.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

This Rococo church is known as the most beautiful village church in the world, and does not disappoint.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

In this truly magical place, rent hasn't been raised since the year 1520.