Lost Lagoon is an artificial 16.6-hectare (41 acre) body of water, west of Georgia Street, near the entrance to Stanley Park in Vancouver, British Columbia, Canada. Surrounding the lake is a 1.75 km (1.09 mi) trail. The lake features a lit fountain that was erected by Robert Harold Williams to commemorate the city's golden jubilee. It is a nesting ground to many species of birds, including Canada geese, numerous species of duck such as mallard ducks, and great blue herons. Also many turtles are usually resident on the northern shore.