In summer look for the hip crowd spilling out the front of this signless wine bar in the Marais. It's named for Jean-Louis, the bartender (bubar or barbu is French slang for "bearded"). The wine menu—with many selections available by the glass—features French wines and small-batch vintages from South Africa, Chile, and Argentina. Try the small dishes and some lovely tartines (toasted bread with various toppings) or bring in whatever noshes suit your fancy from the neighborhood—the owner encourages it!
3 rue des Tournelles, 4e, Paris, 75004, France