Old Saybrook South Green is a 20 acres (8.1 ha) historic district

Historic district (United States)

In the United States, a historic district is a group of buildings, properties, or sites that have been designated by one of several entities on different levels as historically or architecturally significant. Buildings, structures, objects and sites within a historic district are normally divided...

 in Old Saybrook, Connecticut

Old Saybrook, Connecticut

Old Saybrook is a town in Middlesex County, Connecticut, United States. The population was 10,367 at the 2000 census. It contains the incorporated borough of Fenwick, as well as the census-designated places of Old Saybrook Center and Saybrook Manor.-History:...

 that was listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

 in 1976. It includes Mid 19th Century Revival, Early Republic, and Colonial architecture. When listed, the district included 23 contributing buildings. Among these were the c. 1767 Gen. William Hart House

Gen. William Hart House

The Gen. William Hart House is a property in Old Saybrook, Connecticut that was listed on the National Register of Historic Places in 1972. Built in 1767 by William Hart, Jr., the Georgian house became a contributing property to the Old Saybrook South Green historic district after its individual...

 and the c. 1785 Humphrey Pratt Tavern

Humphrey Pratt Tavern

The Humphrey Pratt Tavern is a property in Old Saybrook, Connecticut that was listed on the National Register of Historic Places in 1972.The property is or was also known as See Also:Old Saybrook South Green....

, which were already individually listed on the National Register.