July 16 Museum Kids Monday! 10 a.m. -11 a.m.; $5 per child, ages 9 and under. Bring your child to Ben Lomond this summer to explore history through sight, sound, smell, and touch vary each month from archaeology, with hands-on plants, 19th activities century and toys crafts! and more! Topics . Adult must stay to participate with children. Please contact the site to learn about the subject of the month. Reservations are not required. Ben Lomond Historic Site, Manassas, VA. 703-367-7872.