Ekerö Municipality is a municipality in the province of Uppland in Stockholm County in east central Sweden. The name derives from the name of the main island within the municipality whose name is Ekerön, and literally means "Oak Island". Its seat is located in the town of Ekerö.
Wikipedia

Sweden is a Scandinavian nation with thousands of coastal islands and inland lakes, along with vast boreal forests and glaciated mountains. Its principal cities, eastern capital Stockholm and southwestern Gothenburg and Malmö, are all coastal. Stockholm is built on 14 islands. It has more than 50 bridges, as well as the medieval old town, Gamla Stan, royal palaces and museums such as open-air Skansen.

Wikipedia