a town of Prussia, province of Saxony, circle and 33 miles W.N.W. of Merseburg, near the foot of the Harz Mountains, and at the lower end of the fertile valley called Goldene Aue. The church of St Ulrich here is said to have been founded by Louis, Landgrave of Thuringia, in 1079. According to the legend, when a prisoner in the castle of Giebichstein, near Halle, he vowed a church to the saint, if he should escape, which lie did by a bold leap into the Saale. From this feat he was known among men as Louis the Leaper. Sangerhausen has two castles, churches, hospitals, law courts, and offices. Woollen and linen cloth are manufactured, and many of the people are employed in the neighbouring copper mines. Pop. 6386.