Vembanad Lake is the longest lake in India and the largest lake in Kerala. It is very large and extends over an area of 2,114 square kilometers and has many picturesque islands. The largest part of the lake is located in the city of Alappuzha, and it is one of the favorite attractions of the city's residents, because it can do many activities such as swimming, boating, fishing, relaxing on the beach and others.