Washington Rock State Park
Revolutionary War Lookout — Where George Washington Watched British Troop Movements, 30-Mile Panoramic Valley Views, Watchung Mountains, Green Brook NJ
Washington Rock State Park is a state park in Green Brook Township, Somerset County, New Jersey, on the first Watchung Mountain. The park features a natural rock outcropping used by General George Washington in June 1777 to monitor British troop movements under General Howe, 30-mile panoramic views of the valley below (NYC skyline visible on clear days), one of NJ’s oldest state parks (established 1913), walking trails and picnic areas, and a monument commemorating the 1777 strategic lookout.
Washington Rock is where the Revolution’s intelligence war played out — in June 1777, General Washington climbed this Watchung Mountain outcrop to observe British General Howe’s forces moving through the valley toward Westfield. The 30-mile panoramic view gave Washington the strategic advantage to cut off the British retreat and prevent them from reaching the Continental Army’s supply depot.
Today, visitors enjoy the same commanding vista — on clear days, the New York City skyline is visible on the eastern horizon, and the Watchung Reservation spreads below in a forested panorama.
Things to Do
- Historic lookout — Washington’s 1777 vantage point
- Panoramic views — 30-mile valley vista
- Walking trails — Watchung Mountains ridgeline
- Picnic areas — shaded tables and shelters
- Photography — NYC skyline on clear days
- Revolutionary War history — monument, markers
Park Information
| Feature | Details |
|---|---|
| Location | Green Brook Twp, Somerset County, NJ |
| Established | 1913 — one of NJ’s oldest parks |
| Historic Event | June 1777 — Washington’s lookout vs. Howe |
| Views | 30-mile panorama, NYC skyline |
| Managed By | NJ Div. of Parks / Somerset County |
| Coordinates | 40.6132° N, 74.4733° W |
Frequently Asked Questions
What is Washington Rock State Park NJ?
Washington Rock State Park in Green Brook Township, New Jersey, is a Revolutionary War historic site where General George Washington used a natural rock outcropping on the Watchung Mountains to monitor British troop movements under General Howe in June 1777. Established in 1913, it is one of New Jersey’s oldest state parks. The lookout offers 30-mile panoramic valley views, with the NYC skyline visible on clear days. Features walking trails, picnic areas, and a commemorative monument.
Last updated: May 2026
