The climbing frame - half the size of a real Spitfire - was made from polystyrene reinforced with steel and concrete. The play area in Hornchurch Country Park also includes mounds, tunnels, logs, paths and propeller-shaped seats.
Creative natural landscaping transformed an existing but "uninspiring" play area, said Havering project manager Don Stewart. "The design complements the heritage of the area while the sand, gravel paths and fallen tree logs work well in the rural landscape."
Wicksteed Playscapes used kit for tots and older children including a slide, swings, roundabout and a Black Beard's ladder to mimic a control tower. The borough council used funding from the Playbuilder scheme, the lottery and the London Marathon Trust.
Battle of Britain Spitfires roared over Sutton's Farm air field in the Second World War, around two decades after RAF bi-planes flew from the base, which closed in 1962.