Petaluma’s charming historic downtown district is transformed into an open-air marketplace. The iron-front buildings and architectural gems of the late 1800’s provide a fitting backdrop for more than 200 antique dealers selling collectibles of all types and price. From campaign buttons and postcards to heirloom artwork and armoires, there is truly something for everyone. And while exploring the intriguing array of antiques, refresh and refuel at a downtown café or restaurant before setting off for more treasure hunting; it's a shopper's paradise!