Organization: The Contra Costa County FairgroundsLocation: 1201 West 10th St.Antioch, CA, 94509United StatesSee map: Google MapsPhone:925-757-4400 2025 Contra Costa County Fair Dates: 05/15/202505/16/202505/17/2025Show more datesHide these dates05/18/2025Time: 12:00pm Organization: Chabot Space & Science CenterLocation: 10000 Skyline Blvd.Oakland, CA, 94619United StatesSee map: Google MapsPhone:(510) 336 - 7300 6th Annual Tinkerfest - Chabot Space & Science CenterDates: 05/17/202505/18/2025Time: 10:00am - 5:00pm PST Location: Old Woodside Store3300 Tripp RdWoodside, CA, 94062United StatesSee map: Google MapsPhone:650-299-0104 FREE Old Woodside Store DayDates: 05/03/2025Time: 12:00PM-4:00PM Location: Weekes Park21782 Patrick Ave.Hayward, CA, 94544United StatesSee map: Google MapsPhone:510-583-4000 The Annual Earth Day Citywide Clean-Up & Community Fair - City of Hayward, CaliforniaDates: 04/26/2025Time: 8:30am - 1pm PDT Organization: ConstellationsLocation: 30 Cold Spring Rd.Rock Hill, CT, 06067United StatesSee map: Google Maps Wild Child Society: A Luxury Family Summer Camp at Glacier National ParkDates: 08/03/202508/08/2025Time: 7:00 PM
