Lake Päijänne is the second-largest lake in Finland, covering an area of approximately 1,100 square kilometers. It is located in the central part of the country and is known for its clear waters and numerous islands. The lake is a popular destination for recreational activities such as boating, fishing, and swimming. The lake is also significant for its ecological importance, supporting diverse wildlife and plant species. It serves as a vital water source for the surrounding communities and is connected to the Saimaa waterway system, enhancing its role in regional transportation and tourism.