The Bavarian Spessart Nature Park (Naturpark Bayerischer Spessart) measures 171,000 hectares in area and includes part of the southern Rhön (north of Gemünden and east of the Sinn river) and extends to the southern side of the Main river between Marktheidenfeld and Karlstadt. It features the largest continuous mixed forest in Germany.: The Hessian Spessart Nature Park (Naturpark Hessischer Spessart) covers 72,900 hectares and is bordered in the north by the valley of the Kinzig.