This bakery and museum offers tours of the tastes and mythology of Aachen's signature spice biscuit—just don't ask for the recipe.

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

These ruins reveal the remarkably intact layout of a Roman marketplace.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

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

A wunderkammer of exoticism immortalized by Tom Waits.

Wax models of disease and deformity are on display at this German medical museum.

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

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

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

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

The final resting place for a wealthy Roman family, this tomb might be the best preserved of its kind outside Italy.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This statue celebrates the winners of one of the most popular mountain stages in the Vuelta a España cycle race.

A floating cat sanctuary on an Amsterdam canal.

Cat art as far as the eye can see.

This medieval castle was painted pink as part of a now-abandoned children's theme park.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

The memorial gravesite of the young composer of China's national anthem.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.