The Rocks is a historic estate in Bethlehem, New Hampshire, that covers more than 1,300 acres of land. It was once the summer home of John Jacob Glessner, a wealthy industrialist from Chicago. The estate features several buildings that are listed on the National Historic Register, as well as a Christmas tree farm, a gift shop, and an interactive exhibit on forests in New Hampshire. The estate also offers scenic trails for hiking and wildlife viewing, with views of the White Mountains. The Rocks is owned and managed by the Society for the Protection of New Hampshire Forests, a non-profit organization that works to conserve and steward the state's natural resources.