Forggensee is a lake located north of Füssen in the district of Ostallgäu in Bavaria, Germany. One of many lakes in the region around Hohenschwangau and Neuschwanstein castles, Forggensee is the fifth-largest lake in Bavaria, with a surface area of 15.2 km². The River Lech flows through it. Forggensee is known primarily as a tourist destination for aquatic sports and recreation. The lake provides ideal conditions for surfing, sailing, fishing and boating. The lake is stocked with pike, trout and eel. Two ships navigate the lake on two different routes.