Past Events

The Open Space Authority is proud to sponsor the County of Santa Clara's Day on the Bay, a fun-filled festival along the beautiful South Bay shores of Alviso. Come visit our booth at the event's resource fair centered on environmental health, while enjoying the beautiful Alviso Marina and family-friendly and recreation activities.

The Open Space Authority is proud to sponsor the Guadalupe River Park Conservancy's Pumpkins in the Park! This annual harvest festival brings thousands of visitors to enjoy a fun-filled family celebration and spread awareness to one of our region’s unique natural resources, the Guadalupe River Park

Due to the expected weather conditions, the Full Moon Hike on November 5 has been canceled. We apologize if this causes any inconvenience and hope to see you at a future Open Space Authority event!

Join the Open Space Authority for a moonlit, four-mile guided hike at Coyote Valley Open Space Preserve. Participants will ascend the Arrowhead Loop Trail at golden hour, watch the sunset with a 360-degree view of Coyote Valley and descend once the moon is shining bright.

Join the Open Space Authority for a special YouTube Premiere about the elusive American badger! Cozy up for some badger banter from the comfort of your home with our wildlife experts as they dig into your most burning badger questions.

The Open Space Authority is proud to sponsor Santa Clara County Parks' Fall Festival, which celebrates our valley's rich agricultural history! Come visit our booth at this fun-filled festival at Martial Cottle Park!

The Open Space Authority and the San Jose Astronomical Association (SJAA) invite you to a community star party at Rancho Cañada del Oro Open Space Preserve.

Don't miss this unique birdwatching experience! The Santa Clara Valley Bird Alliance is leading an enchanting hike at Little Uvas, an Open Space Authority property not yet open to the public, and helping attendees spot and identify native birds. All birder levels are welcome!