<p>Located off Lakeville Highway, Keller Estate has stunning views, where rows of grapes and olive trees deck the golden hills of Petaluma Valley. The winery was opened in 2000 by Arturo and Deborah Keller and features a dozen wines. It also sells a brut, Sparking Bubbles, made in the traditional Champenoise method.</p> <p>The tasting room is open Thursday through Sunday, with a sampling of four wines costing $10. The charge is waived with a purchase of wine. Keller Estate is available for rentals, including weddings and other special occasions. </p>