The national headquarters for the American Red Cross, a National Historic Landmark since 1965, is composed of four buildings. Guided tours show off the oldest, a neoclassical structure of blinding-white marble built in 1917 to commemorate women who cared for the wounded on both sides during the Civil War. Three stained-glass windows designed by Louis Comfort Tiffany illustrate the values of the Red Cross: faith, hope, love, and charity. Other holdings included on the 60-minute tour include an original Norman Rockwell painting, sculptures, and two signature quilts. Weather permitting, the tour includes a visit to the courtyard. Reservations are required for the free tour; schedule via email (email@example.com) or phone.