Taking in a concert/picnic at San Francisco's Stern Grove Festival to me is one of the most unique things you can do during the summer. Imagine... eucalyptus trees, dragon flies, wine and free music; this is the life. Stern Grove Festival runs from June 17th to August 19th and offers a great line-up for every Sunday this summer. The grove allows picnics and coolers, so its one of the best places I can think of for a relaxing summer Sunday picnic.
The Stern Grove Festival is celebrating its 81st season and the line up includes Anoushka Shankar, Ziggy Marley and the San Francisco Symphony to name a few. My favorite pick for this year is Anoushka Shankar daughter of sitar player Ravi Shankar, Anoushka will be appearing on July 21st at the Grove.