If you're interested in gardens and want to see some in Riverside, check this out on 5/18. A tour that focuses on the Arts and Crafts influence on the house and garden is presented by the Frederick Law Olmsted Society of Riverside. It includes the gardens Jens Jensen designed for Frank Lloyd Wright's Coonley Estate. Cost: $35 in advance, $40 day of event. Hours: noon to 5 p.m. Call: 708-442-7906.