Like many Marin events this summer, the Marin County Fair is celebrating the 50th anniversary of the Summer of Love with a theme, “Let the Funshine In,” that embraces the music, art and tie-dyed spirit of 1967. In addition to carnival rides and nightly fireworks displays, the fair’s concert lineup is the main attraction, welcoming stars like Ann Wilson of Heart and the Commodores. July 4 features Grateful Dead tribute act Cryptical and the Happy Together Tour, headlined by the Turtles. The fair opens on Friday, June 30, at Marin Fairgrounds, Marin Center, 10 Avenue of the Flags, San Rafael. $15–$20 at the gate. 415.473.6800.