Appenzell Ausserrhoden (German:  Appenzell Ausserrhoden (help·info); in English sometimes Appenzell Outer Rhodes) is a canton of Switzerland. The seat of the government and parliament is Herisau, judicial authorities are in Trogen. Appenzell Ausserrhoden is located in the north east of Switzerland, bordering the cantons of St. Gallen and Appenzell Innerrhoden.