The Osborn-Jackson House is a period house museum named for its first and last owners. The oldest portion of the colonial house was built around 1723, and six generations of Osborns lived here until the late 1960s. The furnishings date from about 1780 to 1820.
East Hampton Village has owned and maintained the property since Lionel Jackson donated it in 1977. The East Hampton Historical Society, which oversees five museums, has its headquarters at the Osborn-Jackson House.