Wilhelmshaven is a town on the coast in Lower Saxony, Germany. It is situated on the western side of the Jade Bight, a bay of the North Sea. It is adjacent to the Lower Saxony Wadden Sea National Park (part of UNESCO World Natural Heritage Site). Wilhelmshaven is Germany’s only deep-water port, and its largest naval base. Go visit the marine museum, coastal museum, aquarium, UNESCO World Heritage Site Wadden Sea Visitor centre or the "Botanischer Garten". Or just walk around, enjoy.
Den Helder is a beautiful town in the Netherlands, situated at the very tip of the North Holland province. Visit the Marinemuseum to learn more about the country's marine traditions, take a walk in the botanical gardens Oranjerie De Groene Parel Den Helder or admire sealife in the Fort Kijkduin Museum and Aquarium.