Even the Museum grounds are fascinating! As you walk among the buildings, notice the granite grist mill wheel from York, Maine. York had the first tidal-powered grist mill in the country (ca. 1634) but this wheel is probably from a later period. Two wheels, one moving and one stationary, ground wheat or corn into flour or cornmeal for the miller. The wheel was turned with water power or yoked livestock. On the right is Strafford County’s largest Sycamore tree, certified by NH’s Big Tree Program. Adjacent to the Keefe House driveway, it is approximately 110’ tall and has a 139” circumference. This tree is ca. 150 years old and in excellent health!