Bremerhaven is the port city of the free city and federal state of Bremen, Germany. It forms an enclave in the state of Lower Saxony and is located at the eastern bank of the Weser river mouth, opposite the town of Nordenham. Though a relatively young city, it has a long history as a trade port, and today is one of the largest German ports, playing a crucial role in Germany's trade.

Bremerhaven has only a few historical buildings, and the high street and city centre are almost exclusively post-war. The main attractions for tourists are the German Emigration Center (since August 8, 2005) and the German Maritime Museum (Deutsches Schiffahrtsmuseum) in the historical harbour with many museum ships such as the Type XXI U-boat Wilhelm Bauer, the Seute Deern (a three-masted sailing vessel), and the Hansekogge, a vintage ship dating from 1380. The Lloyd-Werft shipyard is renowned for building and renovating large cruise liners, for example the Norway. The fishing port also houses an aquarium (the Atlanticum). The zoo reopened on 27 March 2004, after a lengthy renovation. It features Arctic wildlife, both terrestrial and marine. Attractions include the Klimahaus, simulating travel adventure along the 8th line of longitude.
Every five years Sail Bremerhaven is held, a large sailing convention that attracts tall ships from all over the world. The last time it was held was in 2005, coinciding with Sail Amsterdam.