The Idroscalo is an artificial lake in Milan, Italy that was originally constructed as a seaplane airport. It opened on 28 October 1930, in the heyday of seaplanes. When the use of seaplanes for passenger transport declined it became a recreational and sport facility. The lake is 2,600 m long and was constructed in the late 1920s. Its width ranges from 250 m to 400 m and depth from 3 m to 5 m. It is situated between the municipalities of Segrate and Peschiera Borromeo, just within Milan's city limits and near Linate Airport.