Saturday, Aug. 20, 9:30 a.m.– 5 p.m.
Hyde Street Peer
Celebrate the National Park Service’s 100th birthday, and the installation of three new masts in the park’s 1895 National Historic Landmark schooner C.A. Thayer with traditional music, craft demonstrations, films, and fun for all ages. Free, 415-447-5000, bps.gov