Bagdad Cafe, a 24-Hour diner on Market Street in the Castro

The Bagdad Cafe (2295 Market St., 415-621-4434), a favorite 24-hour diner on Market Street, in the heart of the Castro neighborhood. It's been a landmark in this neighborhood for many years, and it's a good bet for healthy salads, hearty breakfast fare (quite good biscuits and gravy), and the like.