Washington Rock was originally purchased in 1913 in commemoration of historical events of 1777. One of the oldest state parks in New Jersey, Washington Rock is situated on top of Watchung Mountain in Green Brook Township. The park is a popular site for picnicking and relaxing, and is best known for its scenic vista and historical significance. Washington Rock’s strategic location and panoramic 30 mile view of the Raritan Valley led local resident Edward Fitz Randolph to guide General Washington there in June of 1777. During Washington’s time in Middlebrook, Washington Rock served as a valuable lookout; from this vantage point, Washington was able to direct his troops to cut off British retreat. Washington Rock is currently being managed by the Somerset County Park Commission.