SIP. SHOP. EAT. PLAY. EXPLORE.Visit and take a walking tour of the grounds at Cornerstone Sonoma, a wine country Marketplace featuring a collection of world-class shopping, boutique wine rooms, artisanal foods, art-inspired gardens, live music, and home to Sunset's Test Gardens and Outdoor Test Kitchen. The Cornerstone Gardens showcase innovative designs from international and local landscape architects and designers. Come visit and watch us grow!