I grew up in San Diego and recently returned after 30 years away. Balboa Park is more beautiful now than it ever has been. Packed a picnic lunch and walked the parks and museums. Great photo ops, street performers, people watching and beautifully maintained grounds. Parking behind the organ pavilion is free and plentiful. Know that the Art Museum is closed on Wednesdays so I felt bad that I missed the one museum I wanted to see. But took in the Air and Space Museum instead and it was a fun diversion. Fees for some attractions/museums but also a day pass available online that is a good value for multiple attractions. Other than the Air and Space Museum, we did not pay anything for a nice afternoon in a beautiful location.