 The Chiemgau Railway is a 10-km line extending into the foothills of the Alps at Aschau im Chiemgau; it is served by diesel multiple units.The Chiemsee-Bahn is a 2-km narrow-gauge steam-operated seasonal tourist line connecting the Prien station with Lake Chiem at Prien-Stock.From there boats operate to Herreninsel in the lake, on which is a royal palace built by King Ludwig II of Bavaria in the latter nineteenth century.