Sweden's "good old days" painstakingly re-created in a model village.

A collection of trees from various corners of the world call Stockholm University home.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

A medieval village, with red wooden cottages around a stone church, stands as a well-preserved example of a settlement type that was once common in northern Sweden.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

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

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

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

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

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

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

The most impressive of Basel's three remaining city gates.

This artistic fountain display pays homage to this area's theatrical history.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

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

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

The old castle kitchen where nucleic acid was first isolated is considered the "cradle of biochemistry."

This statue has a painful history, but activists have since recontextualized it as a way to educate visitors about the dangers posed by fascist regimes.

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

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A striking 12th-century-style castle built on the edge of a cliff.