The Lake District National Park is a vast area of outstanding natural beauty in the north-west of England. It is home to the largest natural lake in England, Lake Windermere. Description: Lake Windermere is a long, narrow lake that is surrounded by mountains. The lake is popular for boating, swimming, fishing, and walking. There are several villages and towns located around the lake, including Ambleside, Bowness-on-Windermere, and Windermere.