Heligoland

Heligoland is a small archipelago in the North Sea, administratively part of the German state of Schleswig-Holstein. The islands are located in the Heligoland Bight in the southeastern corner of the North Sea and are the only German islands not in the vicinity of the mainland: they lie approximately 69 kilometres by sea from Cuxhaven at the mouth of the River Elbe. (Wikipedia)