CHARLOTTENBURG, a town of Prussia, in the province of Brandenburg, district of Potsdam, and circle of Teltow, situated on the Spree, four miles west of Berlin, with which a fine promenade connects it. The town has well-built straight streets, two churches, and a free park; it has several spinning mills, oil and vitriol factories, a beer brewery, and distilleries. It is much frequented in summer by visitors from Berlin. The castle, built in 1696 for the queen of Frederick I., the electress Sophia Charlotte, after whom the town was named, contains a collection of antiquities and paintings. In the castle grounds there is an extensive orangery, as also a granite mausoleum, the work of Schenkel, with monuments of Frederick William III. and Queen Louise by Rauch. The population in 1871 was 19,518.