Grace Farms

SANAA's serpentine "River" building winds through restored meadows with a one-mile walking loop, Cattail Pond and a Tea Pavilion. Free, advance registration requested. Open Tue-Sat 10 a.m.-5 p.m., Sun noon-5 p.m., closed Monday; public tours Thursdays (May-December) and Saturdays year-round at 10:30 a.m.