Rockingham State Historic Site is on Laurel Ave./Kingston-Rocky Hill Rd. (CR 603) between CR 518 and SR 27. Washington wrote his “Farewell Orders to the Armies of the United States” at this site. He lived in the 18th-century house between late August and early November 1783 while Congress was in session in Princeton. While here, Washington received word that the final version of the Treaty of Paris had been signed, making this his final wartime headquarters.
The restored house contains a collection of period furnishings and reproductions of Washington's military equipment. Also at the site is a kitchen garden typical of the late 18th century, filled with vegetables, herbs and flowers.