The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A bronze statue of Momo, a girl holding a huge ear, sits waiting to listen to anyone who needs it.

A German artist built a home and garden filled with whimsical art pieces, like a massive, operational volcano.

A charming and enigmatic sculpture of a lynx haunts the park of Kellinghusen.

After this historic church was destroyed by World War II bombing, its blackened shell was left standing as a monument.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

The largest mosque in Germany.

This Late Gothic building that once housed Erasmus is now known as the filming location of "Suspiria."

A triumphal steel arch on the side of a German mountain.

The final resting place of one of Germany's most accomplished Renaissance men.

Tucked away in a small German apartment is an eclectic museum devoted to West African vodun culture.

A century-long search for a church that was never there.

A tiny basalt mountain with an observation tower overlooking the beautiful Bavarian countryside.

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

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

This 18th-century folly is one of Europe's rare "garden mosques."

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

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

You've probably seen these distinctive orange-tiled columns on the big screen.

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

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

This wooden hotel is a temple to German sustainability and forest conservation.

A giant snail sculpture looking longingly at the German traffic museum.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.