Denmark Region, which encompasses the Copenhagen metropolitan area with the exception of the subtracted province East Zealand but includes the Baltic Sea island of Bornholm, has a population three times larger than that of North Denmark Region, which covers the more sparsely populated area of northern Jutland. Under the county system certain densely populated municipalities, such as Copenhagen Municipality and Frederiksberg, had been given a status equivalent to that of counties, making them first-level administrative divisions. These "sui generis" municipalities were incorporated into the new regions under the 2007 reforms. The Kingdom of Denmark is a unitary state that comprises, in
Copenhagen Municipality to the Social Democratic party. In 2009 the Copenhagen Municipal Council decided that Copenhagen will become the world's first carbon neutral capital by 2025. In 2012 the European Commission announced that Copenhagen will be the 2014 European Green Capital. Copenhagen Municipality Copenhagen Municipality (), also known in English as the Municipality of Copenhagen, located in the Capital Region of Denmark, is the largest of the four municipalities that constitute the City of Copenhagen ("Byen København"), the other three being Dragør, Frederiksberg, and Tårnby. The Municipality of Copenhagen constitutes the historical city center and the majority of its landmarks. It is