This included the creation of a deer park, the reforestation of 1,500 acres of beechwood forest, and the dredging of a man-made 4 acre lake filled with water tapped from an aquifer 400 feet below ground. [20] Along with the restoration of the Georgian mansion house, overseen by Gibbs, Getty added a castle-like addition made of local flint built to house his extensive library, an indoor heated pool, and a replica of The Oval cricket ground. To house his disabled son, he had an accessible cottage built near the pool, from where he could do his water rehabilitation exercises.