Brandenburg, city (1994 pop. 89,200), Brandenburg, E Germany, a port on the Havel River. It is an industrial center and rail junction. Manufactures include steel, machinery, and textiles. Brandenburg was founded as a Slavic settlement called Brennabor or Brennaburg. It was conquered (12th cent.) by Albert the Bear and gave its name to the margraviate (later the province) of Brandenburg. Noteworthy buildings of the city include a 12th-century Romanesque church and the city hall (13th–14th cent.).