Audubon Canyon Ranch is a not-for-profit environmental conservation and education organization that acts as guardian of four main nature preserves in Marin, Sonoma and Lake counties. These 5,000 acres provide significant habitat to wildlife and have been placed in our care by generous donors to steward and protect in perpetuity. Preserves are: Bouverie Preserve, Glen Ellen; Cypress Grove Preserve, Marshall; Martin Griffin Preserve, Stinson Beach; and Modini Mayacamas Preserves, Healdsburg. Martin Griffin Preserve also serves as ACR’s headquarters and houses executive, finance, development and administrative teams. ACR’s Martin Griffin Preserve encompasses 1,000 acres in West Marin, protected in perpetuity since 1962 as a wildlife sanctuary. The Martin Griffin Preserve is open seasonally for visitors and schoolchildren to explore. In the fall and spring, the preserve hosts its well-regarded nature education programs, which serve thousands of elementary schoolchilden every year. During the spring, summer and fall, the preserve is open to visitors. Call to confirm hours: 415.868.9244 ext. 110. ADMISSION: Suggested donation of $15-25 per person supports our programs and management of the 5,000 acres of wildlife sanctuaries owned by ACR. All donations are greatly appreciated!