Wijdemeren (Dutch pronunciation: [ˌʋɛidəˈmeːrə(n)]) is a municipality in the Netherlands, in the province of North Holland, on the western border of the Gooi region. Wijdemeren contains many lakes. In the north(east) Spiegelplas and Ankeveense Plassen, in the (south)west Loosdrechtse Plassen. Wijdemeren was established as a merger of 's-Graveland, Loosdrecht, and Nederhorst den Berg on 1 January 2002. The former municipality of Loosdrecht belonged to the province of Utrecht.