See Green Gable for the fell in the English Lake District.Green Gables is the name of a 19th-century farm in Cavendish, Prince Edward Island, Canada. It is one of the most notable literary landmarks in Canada. The Green Gables farm and its surroundings are the setting for the popular Anne of Green Gables novels by Lucy Maud Montgomery. The site is also known as Green Gables Heritage Centre. The house was designated a National Historic Site of Canada in 1985 and the complex is located within Prince Edward Island National Park.