Carrick Hill is Australia’s most intact twentieth-century heritage house museum and garden, publicly accessible historic property at the foot of the Adelaide Hills, in the suburb of Springfield, in South Australia. It was the Adelaide home of Sir Edward "Bill" Hayward and his wife Lady Ursula Aspects of its privately-collected French, British and Australian fine and decorative arts collection are of an international standard, including masterpieces of British modernism and fine examples of seventeenth-century furniture and house fittings. The garden, grounds, house and collections are all integral to the definition of Carrick Hill.