Taqueria La Azteca Restaurant in Petaluma CA is the best Mexican restaurant in Sonoma County. We serve authentic tacos, burritos, quesadillas and more! Make sure to try our breakfast burrito or chilaquiles if you are looking for a good hangover cure. Taqueria La Azteca is the Best Mexican Restaurant in Petaluma, CA. Best tacos and burritos. Come visit our taqueria for lunch or dinner! We are located at 1420 S McDowell Blvd, Petaluma, CA. 94954.