The Upper Harz Water Regale is a system of dams, reservoirs, ditches, and other structures, many of which were built between the 16th and 19th centuries to divert and store the water that powered the waterwheels of the mines in the Upper Harz region. from Germany. On July 31, 2010, the Regale was declared a UNESCO World Heritage Site affiliated with the Rammelsberg Mines and the Historic Town of Goslar
Postage stamp of Germany (2020)
German Legends - "The Pied Piper of Hamelin"
Thank you MARCEL
