World-class performances, award-winning cuisine and stunning scenery make the annual Festival Napa Valley the region’s most indulgent cultural celebration. Happening over 10 days, the festival boasts concerts, dining experiences and gala events, including several free performances. On Wednesday, July 18, the festival opens with a series of admission-free chamber music concerts. Hear the “Serenade for Wind Instruments” at the Napa Valley Opera House (1030 Main St., Napa; 5pm). Enjoy a string quartet and sextet at CIA at Copia (500 First St., Napa; 6pm), or attend one of two concerts in St. Helena. For details and passes, visit festivalnapavalley.org.