A former customs station on the border of Germany and the Netherlands.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

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

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

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

An icy lake tucked among jaw-dropping alpine panoramas.

A fortified palace in the shape of a ship on the Thiou river.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

There has been an astronomical clock on this spot since the 14th century.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

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

The bears of Bern have been a city highlight for over 500 years.

A quaint Russian village in the middle of a German metropolis.

The "Prussian Versailles" that is as glorious today as when it was built.

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

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

A strange rock formation with numerous legends trying to explain it.

Hamburgers are intensely proud of their tunnel beneath the river.

This "floating railway" is one of the world's oldest monorail systems.

The tallest mountain in mainland Netherlands isn't actually very tall.

A beautiful maze marks where three countries meet.