​RASTENBURG, a town of Germany, in the province of East Prussia, lying in a flat sandy plain on the Guber, 64 m. S.E. of Konigsberg by the railway to Prostken. Pop. (1905) 11,889. Its principal manufactures are flour, sugar, oil, beer and machinery. In the vicinity is Karlshof, a celebrated establishment for the cure of epileptic diseases. See Beckherrn, Mittheilungen aus Rastenburgs Vergangenheit (Rastenburg, 1891); and Schaffer, Chronik von Rastenburg (Rastenburg, 1889).