Enjoy a picnic lunch overlooking the Merrimack River, then wander through the Hand Tub House and the Toll House Museum at your own pace. Try to imagine what life was like here two hundred years ago. The Hand Tub House has been a central figure of the Rocks Village district since it was constructed in 1829. It was an early firehouse, and originally housed a manually operated firefighting pump. This public building has been used throughout its existence as a firehouse, community center, meeting space, and as part of a museum.