A swath of France so devastated by war it is still forbidden to go there.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Site of one of World War I's most horrific scenes.

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

The official motto of Luxembourg reminds passersby of the Luxembourgish commitment to their national identity and sovereignty.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

This small chapel built into rock is the oldest place of worship in Luxembourg.

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

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

Tiny castle in the middle of the Rhine made you pay to pass.

Legendary site where an evil bishop was devoured by rodents.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

It's good luck to be mocked by this monkey.

A larger-than-life monument to the inventor of the Bunsen burner.

The narrowest street in the world is in danger of closing up entirely.

This Rococo church is known as the most beautiful village church in the world, and does not disappoint.

A typical crusty old museum this isn't.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.