Strut, 470 Castro, 1st & 3rd Floor. The oldest public open drawing group in the world celebrates 30 years of drawing the male nude in San Francisco with an exhibit of drawings by current and past participants in the weekly drawing group founded by photographer/artist Mark Chester. markichester.com

San Francisco Museum of Modern Art, 151 Third Street. Presenting for the first time side by side the art of two of the 20th Century’s most extraordinary painters. sfmoma.org

Daily through May 25 @ San Francisco City Hall, 1 Dr. Carlton B. Goodlett Place. SF Arts Commission’s exhibition of work by legendary 60s rock n roll photographer Jim Marshall and a new Market Street Poster Series featuring contemporary perspectives on the Summer of Love. sfgov.org

San Francisco Botanical Garden, 1199 9th Avenue. An exhibit of nature illustrations by Rachel Diaz-Bastin open through April 30. Sfbotanicalgarden.org

Novato Theater Company Playhouse, 5420 Nave Drive, Novato. The musical about a single man unable to fully commit to a steady relationship. novatotheatercompany.org

@ Omi Gallery, 2323 Broadway, Oakland. A group exhibition demonstrating solidarity among artists who identify with being a Nasty Woman. nastywomenoakland.com

@ Hellman Hollow, Golden Gate Park, 800 John F. Kennedy Drive. Annual Easter with the Sisters of Perpetual Indulgence with the theme “Sanctuary: Universal Joy,” a tribute to the 50th anniversary of the Summer of Love.thesisters.org/events

@ El Rio, 3158 Mission Street. Hosted by Honey Mahogany with guest DJs and performers.elriosf.com