This National Historic Landmark, built 1824-1830, is furnished with collections of the communal Harmony Society, German immigrants known for industrial prosperity in textiles, railroad investments and winemaking; 17 restored structures, gardens, original tools and furnishings, Visitor Center, orientation movie, exhibits and Museum Store. Perform historic chores, encounter traditional tradesmen (seasonal). Tour times vary; call ahead. Allow two hours for touring. Adults 12-64, $9; seniors 65 and older, $8; youth 3-11, $6.