Castle Rock State Park

New, State-of-the-Art Robert C. Kirkwood Entrance Opening Soon

Opening soon: The grand opening of the Robert C. Kirkwood Entrance to Castle Rock State Park. This entrance is made possible by a generous gift from the Kirkwood family, you, and other Sempervirens Fund supporters. Join our mailing list to learn when the entrance will open to the public.

The park entrance is getting a 21st century upgrade, including:

  • Free Wi-Fi and digital map you can access offline when cell coverage drops
  • A demonstration garden, planted and tended by the Amah Mutsun Land Trust, that illustrates how Native Americans used local plants for medicinal and other purposes
  • 60-seat amphitheater for events and programs
  • Interpretive exhibits about the flora and fauna of the area
  • A drinking water station and accessible pathways and picnic areas
  • 90-car parking lot
  • And perhaps most importantly: bathrooms!

People like you supported Sempervirens Fund’s purchase of the 33-acre parcel that will serve as the new entrance to the park. In total, Sempervirens Fund donors provided $8 million to design, plan, permit and build this important addition to Castle Rock State Park. Thank you!

Share Your Pictures

When you go to Castle Rock State Park, tag your social media posts with #CastleRockStatePark and tag us on Facebook, Twitter and Instagram. We’d love to see what you see out there!

So Much To Do in Just One Park

At Castle Rock State Park there is something for everyone:

50+ Years of Sempervirens Fund and Castle Rock State Park

Since Sempervirens Fund established it 50 years ago, Castle Rock State Park has been Silicon Valley’s gateway to the Santa Cruz Mountains.

In 1959, Russell Varian obtained an option to buy the land surrounding Castle Rock for the purposes of creating a new state park. Sadly, he died before he could complete the purchase. Yet, Russell’s wife Dorothy was persistent and committed. She and Sempervirens Fund created Castle Rock State Park in 1968. Together, they launched the legacy you and other Sempervirens Fund donors carry on to this day. Today, Castle Rock spans 5,242 acres and continues to attract rock climbers, hikers and day trippers. This tremendous public resource would not have been possible without forward-looking thinkers like you and the Varians.