Gotland County (Gotlands län) is a county or län of Sweden. Gotland is located in the Baltic Sea to the east of Öland, and is the largest of Sweden's islands. Counties are usually sub-divided into municipalities, but Gotland County only consists of one municipality: Gotland Municipality. Gotland County at present is unique in Sweden as there is no county council. The municipality handles the tasks that otherwise is handled by the county council, mainly health care and public transport. However, for Gotland County, there is a County Administrative Board which is a national authority. Both the County Administrative Board and the municipality have their seat in the largest city Visby, with 22,000 inhabitants.