Los Osos CA 93402
Located on the north end of Ramona Avenue between Broderon and 4th Street. The park is open from dawn to dusk and has trails that wander through the Monterey cypress and eucalyptus trees around two freshwater ponds and a salt marsh to the edge of Morro Bay. The preserve is managed by the Morro Coast Audubon Society. Monarch butteries are plentiful in this preserve from late October to March.