Bremerhaven (, literally "Bremen's harbour", Low German: Bremerhoben) is a city at the seaport of the Free Hanseatic City of Bremen, a state of the Federal Republic of Germany. It forms an enclave in the state of Lower Saxony and is located at the mouth of the River Weser on its eastern bank, opposite the town of Nordenham. Though a relatively new city, it has a long history as a trade port and today is one of the most important German ports, playing a crucial role in Germany's trade.