Fosterfields, also known as Fosterfields Living Historical Farm, is a 213.4-acre (86.4 ha) farm and open-air museum at the junction of Mendham and Kahdena Roads in Morris Township, New Jersey. The oldest structure on the farm, the Ogden House, was built in 1774. Listed as the Joseph W. Revere House, Fosterfields was added to the National Register of Historic Places on September 20, 1973, for its significance in art, architecture, literature, and military history. The museum portrays farm life circa 1920.