Residents of several neighborhoods in San Francisco may notice a larger number of "strollers" than usual this weekend. No, we don't mean the type of strollers that carry babies – we're talking about the type of folks who stroll around town pretty slowly and look unusually happy. These blissful residents will be wandering about with their smiles because of S.F. Open Studios weekend 1, which is coming to Fort Mason, the Marina, Pacific Heights, Russian Hill, North Beach, Hayes Valley, the Haight, the Sunset, and the Richmond this weekend. San Francisco's open studios program is the oldest and largest in the country. This year features over 900 emerging and established artists based right here in the city. For artists, it's a chance to connect with collectors, and for the rest of us, it's a chance to peek inside the world of an artist's life. And there is no need for Mission, Castro, or Upper Market dwellers to worry: Those neighborhoods, and a few more, are on deck for next week.