Wilhelmshaven is a city in the state of Lower Saxony, Germany. It is located on the coast of the North Sea and is known for its large harbor, which is one of the busiest in Germany. Wilhelmshaven has a population of about 76,000 people and is home to several naval and maritime institutions, including the German Maritime Museum and the Maritime School. The city also has a number of parks and recreational areas, as well as cultural attractions such as theaters and museums.