By car from Rt. There is a sign on Pine Street at the entrance of the driveway leading to the parking lot, but sometimes the sign is not easy to see due to trees or vehicles.
Museum is at the end of the walkway.
All trains and buses stop at Waltham Common, near the Museum. Just before crossing the river, turn into driveway of old mill complex. Follow the driveway, keeping river on your right. Museum is at end of gravel driveway. If you get lost, look for a tall smokestock in the old mill complex, right by the river.