Although it's more of white tablecloth fine-dining establishment than a walk up and order bar, but when you're in the mood to try new wines (and want recommendations from bartenders that actually know their shit), Il Fornaio is pretty hard to beat.
1430 Mt Diablo Blvd
Walnut Creek
CA
94596
1430 Mt Diablo Blvd, Walnut Creek, CA
+1 925.296.6100
www.ilfornaio.com/walnutcreek