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

Largest illuminated advertisement sign in the world.

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

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Legendary site where an evil bishop was devoured by rodents.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The last bastion of Roman presence north of the Alps looms over a German town.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

This 600-year-old home seems to defy physics.

The prototype for all Nazi concentration camps.

A small but immensely extravagant palace built by the "Night King."

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

One of the highest mountain passes in Europe has been ranked among the best driving roads in the world.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.