Weir Farm — Connecticut’s only national historic site — is on Nod Hill Road on the Wilton-Ridgefield town line and is run by the National Park Service. The farm was the summer home of American painter J. Alden Weir (1852-1919) and believed to be a seminal site for the development of American Impressionism.. For  information, call 203-834-1896 or visit nps.gov/wefa. Weir Farm Art Center at 735 Nod Hill Road (203-761-9945) is a private, non-profit organization and the cooperating association of the Weir Farm National Historic Site.  Adjacent to Weir Farm is the Weir Preserve, owned by The Weir Farm Art Center, which provides art-related programs at the farm and elsewhere. Weir Preserve offers 110 acres of hiking trails through fields and woodlands. There are also special programs throughout the year. For information, visit weirfarmartcenter.org.