A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

These exceptionally narrow openings between giant rocks will test your daring.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

The ruins of one of the most important Roman villas north of the Alps.

The birthplace of the titular coat and related products celebrates its claim to fame with a statue of a coat.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

A university observatory dome painted to resemble the beloved 'Star Wars' droid.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Europe's longest Hornbeam tunnel.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

The "dragon babies" of southeastern Europe.

A little sculpture with a large wardrobe.

Brussels' favorite peeing boy has a sister.

The last Oostende trawler to fish off Iceland is now a museum.

A massive, gleaming sea turtle with a rider atop its shell looks out over the horizon.

Rediscovered in 1992, this abandoned medieval village once flourished by fishing and piracy.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.