Elderfields Preserve (also known as Elderfields Historic Preserve) is a historic museum, farm, nature preserve, and cultural center located within the Incorporated Village of Flower Hill, in Nassau County, on Long Island, in New York, United States.

[1] This farmhouse was built around 1675 as part of the historic Hewlett farm, making it one of the oldest homes still standing in the area and on Long Island, as a whole.

[1] Carlos and his wife, Mabel, were prominent figures in the early history of Flower Hill, and he was the person who named the farm Elderfields.

[2] A walled garden and two carriage sheds are also located in the preserve.

[2][3] Elderfields Preserve is also home to The Art Guild of Port Washington.