Hartwell House is a country house in the parish of Hartwell in Buckinghamshire, Southern England. The house is owned by the Ernest Cook Trust, has been a Historic House Hotel since 1989, and in 2008 was leased to the National Trust. The Grade I listed house is Jacobean with a Georgian front and Rococo interiors, set in a picturesque landscaped park, and is most famous as the home of exiled French king Louis XVIII in the early 19th century.[1]