The Museum comprises five galleries as well as the Wintersteen Courtyard. The Main Gallery offers bi-monthly changing exhibitions of contemporary art and history. The Helene Sturdivant Mayne Photography Gallery shows six exhibitions a year of diverse fine art photography. Regional artists are featured in the Coastal Marin Artists Gallery and The Margaret Duncan Greene Gallery exhibits selections from the permanent collection of art from the 1800s to the present. The Floyd Russell Family History Room details the history of the area with photographs, documents and objects from the extensive collections in the Museum’s archive. One wall is reserved for changing displays of regional interest.