This natural wonder is disappearing at an alarming rate.

Few other hotels can rival the grandeur of the Castle in the Rockies.

This Transylvanian church has changed its denomination four times.

Romania's triumphal arch looks out over Bucharest.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

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

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This gruesome biblical parade celebrates the one day a year that a bit of Jesus' blood turns to liquid.

A beer pipeline runs beneath Bruges.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Christ's blood allegedly preserved in a Belgian town.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

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

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.