These rare statues are one of the few remaining material witnesses to Old Prussian culture.

Modern art commemorates one of the first military actions of World War II.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

This antique thermometer honors the creator of the first universal temperature scale.

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

Too much gossip or just missing curfew could land you in here for a couple of days.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

It houses the remains of a 17th-century version of the Titanic.

The Swedish flag over this small naval fort signals that the nation is at peace.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This cubist Vienna church building looks like some sort of alien stonehenge.

Thousands of well-dressed mummies below a monastery.

Eastern Bloc nostalgia, anybody?

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Giant topiary dog once played a role in a terrorist bomb plot.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

This 19th-century fountain's namesake animal isn't what you think it is.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

This outsider art house has gone from clinical creation to astounding artwork.

The site of Austria's biggest concentration camp now honors its victims.