I haven’t been here (yet).
Water Management System of Augsburg
The water management system of the city of Augsburg has evolved in successive phases from the 14th century to the present day. It includes a network of canals, water towers dating from the 15th to 17th centuries, which housed pumping machinery, a water-cooled butchers’ hall, a system of three monumental fountains and hydroelectric power stations, which continue to provide sustainable energy today. The technological innovations generated by this water management system have helped establish Augsburg as a pioneer in hydraulic engineering. [source]