Circus Bella Presents: AH HA! on Sunday, July 19, 2026 at Salesforce Park Amphitheater (425 Mission St) (Festival). Cost: Free. Best for: preschool, school-age, tween. Free, all-ages Circus Bella performance of AH HA!, a 60-minute one-ring circus with acrobats, aerialists, jugglers and clowns backed