Sonnewalde is a town in the Elbe-Elster district, in Lower Lusatia, Brandenburg, Germany. It is situated 8 km northwest of Finsterwalde. History From 1815 to 1947, Sonnewalde was part of the Prussian Province of Brandenburg. From 1952 to 1990, it was part of the Bezirk Cottbus of East Germany. Demography References Localities in Elbe-Elster