1 Best Sight in Saxony, Saxony-Anhalt and Thuringia, Germany

Erected in 1558, the Alte Wasserkunst served as part of the town's defensive fortifications, but its true purpose was to pump water from the Spree into 86 cisterns spread throughout the city. It proved so efficient that it provided the city's water supply until 1965. It is now a technical museum.