The Swan Castle scenic spot actually contains Neuschwanstein Castle, Old Swan Castle and this Alpine Lake in total three attractions, if you only visit the appearance of Swan Castle, then these three attractions are not to buy tickets. This lake is at the foot of the old Swan Castle Mountain. It is small in size, but the lake is quiet and clear. It is said that the lake is more than 60 meters deep. There are many duck swans in the lake, and tourists can rent a boat to swim in the lake.