With locations in both New York and San Francisco, Flatiron has emerged as one of the premier wine retailers in the country. They have access to nearly every top-tier producer in New and Old Worlds alike — but the staff is just as comfortable helping with a $15 bottle for a Tuesday night as with grand cru Burgundy. The spacious SF store has not only an impressive selection of California wines both old and new, but remarkable depth of grower Champagne. (Pro tip: Don't miss special deals available via their regular emails.)