Mountain where Jesus was first tempted by the Devil.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

An enormous roadside attraction in the heart of Spain's toy-making hub.

This interactive museum highlights the history and philosophy of one of the world's most difficult sailing races.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

Tucked away inside this concrete building is a church and its grand display of brutalist architecture.

These lesser-known Maltese catacombs date back over 1,700 years.

A hidden tunnel of bones in one of Malta's oldest churches.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Sausages, schnitzel, and weiners.

This residence straddles a border between Belgium and the Netherlands.

This historic streetcar system has been running since the 19th-century.

The Tübingen University anatomical collection hosts an example of an extremely rare medical phenomenon.

The trailblazing Swedish businesswoman created a beloved minty candy called polkagris.

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

Shortest overhead power line in the world.

Inside this unique festival hall, a slide leads guests down to a subterranean watering hole.

This magnificent church allows travelers along one of Germany's busiest roadways a chance to rest and reflect.

You haven’t properly toured a winery until you’ve slept in an actual wine barrel.