Fair Lane was the name of the estate of Ford Motor Company founder Henry Ford and his wife Clara Ford in Dearborn, Michigan, in the United States. It was named after an area in County Cork in Ireland where Ford's adoptive grandfather, Patrick Ahern, was born. The 1,300-acre (530 ha) estate along the River Rouge included a large limestone house, an electrical power plant on the dammed river, a greenhouse, a boathouse, riding stables, a children's playhouse, a treehouse and extensive landmark gardens designed by Chicago landscape architect Jens Jensen. The residence and part of the estate grounds are open to the public as a historical landscape and house museum and preserved as a National Historic Landmark.