Join us this Fourth of July for a special open house to celebrate America’s 250th birthday. Enjoy guided tours of the exhibitions and see rare objects from New Hampshire’s Revolutionary past, including two flags from the Second N.H. Continental Regiment. Learn 10 things you probably didn’t know about New Hampshire and the American Revolution. Participate in family friendly games and activities while enjoying the festive atmosphere of downtown Concord, with a parade at 9 a.m. and the State House ceremony at 10 a.m. The New Hampshire Historical Society is only open 11 a.m. to 1 p.m. on this holiday. Admission is free.