Bremen, officially the Free Hanseatic City of Bremen, is the smallest and least populous of Germany's 16 states. It is informally called Land Br…Bremen, officially the Free Hanseatic City of Bremen, is the smallest and least populous of Germany's 16 states. It is informally called Land Bremen, although the term is sometimes used in official contexts. The state consists of the city of Bremen and its seaport exclave, Bremerhaven, surrounded by the larger state of Lower Saxony in northern Germany.