Downtown Holland Splash Pad, 10–11 a.m. — This free community class uses slow gentle movements, controlled breathing, and self-applied massage to strengthen the mind | body connection, reduce stress, and improve balance and overall health. Taught by Marcia Schrotenboer of West Michigan Qigong. — westmiqigong.org

Kollen Park, 10 a.m.–4 p.m. — Holland Museum’s annual Vintage Boat Show is back! Come see dozens of gorgeous vintage boats, learn about their history and chat with boat owners. — hollandmuseum.org