Washington Rock State Park

Green Brook is celebrating our 250th anniversary on June 6, 2026, at Washington Rock State Park, from 11AM to 4PM. There will be many festivities and attractions, including: NJ Fife and Drum; Outwater Militia; Colonial Medicine/Battlefield; General George Washington – who will give a wonderful lecture; DAR Chapter; Plainfield Historical Society; Recitation of the Declaration of Independence by a local High School Student; and lots more! Capital Craft will be catering the event for purchase and Danny’s Ice Cream will be there for purchase. * Shuttle bus service will be available from Green Brook Middle School to the event site at Washington Rock State Park.