A fact from Upper Harz Water Regale appeared on Wikipedia's Main Page in the Did you know column on 22 January 2010 (check views). The text of the entry was as follows:
Did you know... that the Upper Harz Water Regale(pictured), a network of dams, lakes, ditches, and tunnels built between 1536 and 1866 to supply water to the mines of the Harz mountains in Germany, is the largest of its kind in Europe?
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