A National Historic Landmark, Jackson House is the oldest surviving wood-frame house in New Hampshire. It was built by Richard Jackson, a woodworker, farmer, and mariner. It resembles English post-Medieval prototypes, but is notably American in its extravagant use of wood. Succeeding generations added a lean-to by 1715, along with more additions in the 1700s and 1800s to accommodate different family groups sharing the house at once.