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Visit Us

Tasting Room

Our tasting room is located amidst the art-filled gardens of Cornerstone Sonoma. Join us for a tasting on our deck or by the fireplace. The tasting room is open daily, no appointment is necessary. For a customized visit, please e-mail us at or call us at (707) 706-2020.

Open Daily 10am - 5pm

Obsidian Wine Co. Tasting Room
23568 Arnold Drive, Sonoma, CA 95476




Halloween | Arrive in Costume

10:00am to 5:00 pm
Sat Oct 27, 2018 through Wed Oct 31, 2018

Venue: TASTING ROOM • 23568 ARNOLD DR., SONOMA, CA 95476


We would love to see your costume this Halloween! Stop into our Tasting Room in costume October 27th through 31st and receive a complimentary wine tasting. Can't make it to wine country? Then send us a pic (in costume, of course) of you and your friends enjoying some wine from Poseidon Vineyard or Obsidian Ridge! We'll post the photos to our Facebook page and the best one will receive a special prize. 



Fine Feathered Friends | A Turkey Pairing

10:00am to 5:00pm
Fri Nov 16, 2018 through Wed Nov 21, 2018

Venue: Tasting Room • 23568 Arnold Dr., Sonoma, CA


Stop in and see us November 16th through 21st and ask for our "Pairs Well with Turkey" tasting! Enjoy a flight of our hand-crafted, single-vineyard wines that we feel pair exceptionally well with the Thanksgiving bird and accoutrements. No reservation needed.



Lighting of the Snowmen | Wine + Crafts

4:00pm to 8:00 pm
Saturday, December 1, 2018

Venue: Tasting Room • 23568 Arnold Dr., Sonoma, CA 95476


Save the date! Now in its 13th year, the Annual Lighting of the Snowmen here at Cornerstone Sonoma has become a Sonoma Valley holiday tradition! The festival will feature live music, crafts for kids, wine & beer tastings, warm drinks, delicious food, festive decorations and Santa himself! Bring your friends and family by our Tasting Room during the event–kids can take part in a wine cork ornament craft station while parents enjoy specials on wines by the glass.

Annual Cellar Holiday Party

1:00pm to 4:00pm
Saturday, December 8, 2018

Venue: Cellar • 21684 8th St. East, Suite #450, Sonoma, CA 95476


Save the date for our annual Cellar Holiday Party celebrating the holidays and our newly released reserve wine selections from Obsidian Ridge & Poseidon Vineyard. We'll be serving up delicious bowls of Cioppino—a Bay Area classic at the holidays. Live music, barrel samples and plenty of mingling with our team and fellow wine lovers.

RSVP Required • $40/person • Complimentary for Club Members

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