Daily jousts and dancing barrel makers in Munich's mechanical clock.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

A small but immensely extravagant palace built by the "Night King."

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

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

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

A beautiful maze marks where three countries meet.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

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

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.

This 18th-century folly is one of Europe's rare "garden mosques."

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

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

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

A former ironworks that was the first UNESCO industrial site.

A Faraday Cage protects cars from a nearby high-power transmitter.

World's largest barrel containing an inn.

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

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

Home to the deepest rift anywhere on Earth.