The San Lorenzo Valley is home to scenic redwood drives, Roaring Camp Railroads and the San Lorenzo River. The mountain towns of Ben Lomond, Boulder Creek, Brookdale and Felton include boast local wineries, antique stores, and galleries. Henry Cowell Redwoods State Park contains a centuries-old Redwood Grove and a self-guided nature path. Other attractions of the San Lorenzo Valley. The San Lorenzo Valley is also home to Big Basin Redwoods State Park, California’s oldest state park. Big Basin offers the largest continuous stand of ancient coastal redwoods south of San Francisco, with hiking, biking and equestrian trails, picnic areas, campgrounds and 80 miles of trails.