An old auto garage on the north branch of the Chicago River has been transformed Cinderella-like into a sexy, retro, 1940s-style nightclub and restaurant. The beautiful, well-appointed crowd shows up here to smoke stogies from the club's humidor, lap up martinis, and make the scene (there's also an expensive, fine-dining restaurant whose patrons can move on to jazz after dinner without paying the cover charge). Green Dolphin books jazz in all its permutations, from big band to Latin jazz. The club's main room is closed Monday and Tuesday.