Blankenburg (Harz) is a town and health resort in the district of Harz, in Saxony-Anhalt, Germany, at the north foot of the Harz Mountains, 12 miles southwest of Halberstadt.
It has been in large part rebuilt since a fire in 1836, and possesses a castle, with various collections, a museum of antiquities, an old town hall and churches. There are pine-needle baths and a psychiatric hospital. Gardening is a speciality. The nearby ridge of rocks called the Teufelsmauer offers views across the plain and into the deep gorges of the Harz.