It is a well-known fact, and easily noticeable for any visitor, that San Franciscans love using French words. Especially when it comes to food, but not only. I’ve seen, for example, a number of houses with ‘Watch the dog’ signs in French, or local columnists routinely using unnecessary French words. So that probably explains why Shannon Alley, between Post and Geary, Taylor and Jones, has a sign in French. ‘Allée Shannon’:

Photo by Tenderblog