Petaluma

The county's port specialist, founded in 1994 as Sonoma's only dedicated port house and now run by Heringer Estates. Tucked into the riverside Foundry Wharf just southeast of downtown, the casual, industrial room pours small-batch California ports, sherry, and grappa. Their motto: drink dessert first.

The northern anchor of the walk, worth the longer stroll up the Boulevard. Founder Garry Brooks makes restrained, elegant Pinot Noir and Chardonnay with his wife Joanne — the 'Note' — in a century-old former Studebaker dealership. Seated tastings come with local cheese; some Friday evenings bring live music.

Winemaker Kevin Bersofsky's "roller coaster" label — a garage start, a brush with the feds, then a 2015 debut. Now a downtown Petaluma Winery & Record Lounge pouring cool-climate Petaluma Gap Chardonnay, Pinot, and Syrah beside 4,000+ vinyl records for sale. Dog-friendly, with requests taken.

Billing itself the 'Starting Line to Wine Country,' Adobe Road's room in the Great Petaluma Mill pours small-lot, award-winning wines from Sonoma, Napa, and the Petaluma Gap, seven days a week. A motorsports streak runs through it, from the Apex bottlings to the flagship Cabernets. Flights or by the glass.

Part bottle shop, part neighborhood wine bar: owner, sommelier, and wine writer Jason Jenkins stocks 400-plus labels from around the world and pours them by the glass at a small tapas bar in back. Belly up to a barrel with cheese, charcuterie, and a draft beer. Unpretentious and well-priced.

Petaluma's Barber family closed their eleven-year Hotel Petaluma tasting room and reopened bigger: Taste Petaluma brings their wine, spirits, cheese, and dessert under one Washington Street roof. Pour a Barber Cellars flight, add a cheese board and a craft cocktail, finish with a truffle.

A cozy, living-room-style wine lounge in Petaluma's Theater District, family-run since 2007. Owner-sommelier Sahar Gharai pours boutique wines from around the world — 40-plus by the glass — with gourmet bites, a signature bacon-pear pizza, and classic black-and-white films above the bar.