More than two decades of conservation and restoration, The Octagon barn in San Luis Obispo is finally going to be open to the public. The iconic barn is one of two left in the state of California. Once used to house and milk cows in the early 1900’s, it will now be available to the public for weddings, birthday parties, and other community events. The public is invited to a grand opening tomorrow between 11 a.m. and 5 p.m., and include food trucks, wine tasting, kids activities, milking demonstrations, and live music.