We'll see you at the John Muir Historical Site in Martinez. Marilyn says, "There is a mansion, an orchard and other buildings to paint." The JMHS is open Saturdays but not Mondays. There is parking and restrooms. This site has a picture of the mansion.
Directions: Take 80 toward Sacramento, take 4 toward Martinez, then exit Alhambra and go under freeway. Turn left on Alhambra and turn directly left into parking lot. You can also get there via 680.
Their address is:4202 Alhambra Avenue, Martinez, CA 94553-3826 Phone:(925)228-8860