Celebrate the Museum expansion groundbreaking with construction vehicles, heavy machinery on display. Food trucks, and wine/beer for purchase. Members $10; non-members $20–$22; free for infants 11 months and younger. Members: $10. Non-members: $20–$22. Free: 11 months & younger. Discounts available for qualifying guests. 4:30–8 p.m. Children’s Museum of Sonoma County. 1835 W. Steele Ln., Santa Rosa. cmosc.org/family-fun-nights.