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

The mirrored section takes the shape of Hebrew characters when viewed from above.

This fortress-like monastery is covered with intricate frescoes.

In this German city center, the streets have no names.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

The only airport with a people mover system designed by Walt Disney Imagineering.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

This little sun pays homage to a massive gate that once stood at this location.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

See gorgeous frescoes at this modest Byzantine place of worship.

A town that sets itself apart with supersized designer seating.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

Two buildings named after their windows that make it look like a sea of television sets plastered to a wall.

A futuristic rocket marks the spot where three borders meet.

A retro Yugoslav congress, cultural, and business hall built in the 1970s, with an iconic world clock.

Three pristine alpine lakes named in memorial of an accident that resulted in three different plane crashes.

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

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

Below the altar in Saint-Willibrord Basilica rests the mortal remains of Luxembourg's patron saint.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

This feat of Brutalist architecture is also known as the Three Sisters.

St. John the Baptist's forearm is housed in this remote 11th-century monastery.

This 20-foot-tall sculpture is in honor of the herd of bighorn sheep that call Radium Hot Springs home.