BLANKENBURG, a town and health resort of Germany, in the Land of Brunswick, lying at the northern foot of the Harz mountains, I2m. S.W. of Halberstadt. Pop. (1933), 12,798. It has been in large part rebuilt since a fire in 1836, and possesses a castle, a museum of antiquities, an old town hall and churches. In the vicinity is a cliff called Teufelsmauer (Devil's wall), from which fine views are obtained across the plain and into the deep gorges of the Harz mountains.