An old wool-washing house filled with Fluxus contemporary art.

This amazing piece of modern art honors the hundreds of fishermen killed during Cambrils' "year of misfortunes."

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

This impressive former palace contains a hidden gem for fans of modern sculpture.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Four-story slides send people whizzing through the math department at this Munich university.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.