A tiny chapel clings to a precipice above Germany’s gemstone capital.

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

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.

Luxembourg's most popular statue since 1923 has been missing for... 26 years!

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

Hilltop monument to the victory of a new nation in the Franco-Prussian War.

The largest flower auction house in the world.

This little patch of Europe remained neutral for more than a century because of a mine.

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

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

A beautiful maze marks where three countries meet.

A pair of giant stone heads represent the ancient Roman saints beheaded here.

A ruined castle stands atop a hill surrounded by dragon lore.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

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.

A monumental golden thumb rises as an iconic homage to Nouveau Réalisme, bold in scale and unapologetic in spirit.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

It has an American Dream Car exhibit, Europe's largest Formula One collection, and many, many mannequins.

These 18th century gardens tell a rocky story of the son of Odysseus.

The largest brick bridge in the world.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

Most often copied TV Tower in the world.