Upcoming Events
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Exploring Big Basin (CANCELED)
Learn about redwoods, forest plants, fires, geology, history and more on these fun, varied hikes with docent Diane Shaw. Hikes are 5-8 miles and last up to 5…
Open House at the Castro Adobe: Vaqueros y Bandidos (CANCELED)
Round up your family and drop in to our celebration of California’s Rancho Era, when cattle was king, bandits roamed the countryside, and the Castro Family built their…
Coastal Wildflower Day (CANCELED)
The seventh annual Coastal Wildflower Day celebrates the native wildflowers of the San Mateo coast with activities for the whole family. Discover the beauty and special features that…
Wildflower Weekend
Rancho del Oso’s annual Wildflower Weekend event displays over 80 plants in bloom including species found in the Waddell Valley, the coastal portion of Big Basin Redwoods State…
Gardening and Wool Day
Join a fun-filled day of classic springtime ranch activities! Help us plant our heritage vegetable garden, and watch sheep herding and wool sheering demonstrations. Draft horse wagon rides…
World Migratory Bird Day
Fly, walk, bike, or drive to the International Migratory Bird Day at Natural Bridges State Beach. Celebrate the amazing journey of millions of birds as they migrate…
Mother’s Day Walk: Women of Big Basin
Celebrate Mother’s Day in the park by honoring the spirited women who lived in, worked in, and fought for Big Basin throughout its history. Living history reenactments bring…
Open House at the Castro Adobe: Women of the Castro Adobe
Without working women out in front and behind the scenes, our adobe would have fallen apart ages ago. From the first indigenous woman to light the fire in…
Open House at the Castro Adobe: Summer at San Andres
Summer really brings out the beauty of the Rancho, and is a great chance to explore a historic local treasure, whether it’s June gloom or full California sun.…
Life on the Ranch Day
Come experience firsthand the early days of life on a dairy ranch with our costumed docents, living history demonstrations, and old-time activities. Draft horse wagon rides available. Bring…