Evening cocktails on a patio? That’s posh. Evening cocktails on a glam rooftop? Talk about a one-up. You can’t throw a martini olive without hitting a rooftop bar in L.A., with fantastic spots in nearly every major neighborhood. Skybar (8440 Sunset Blvd., West Hollywood, 323.848.6025) at the Mondrian Hotel and the Standard hotel bars (550 S. Flower St., downtown, 213.892.8080; 8300 Sunset Blvd., West Hollywood, 323.650.9090) in downtown and Hollywood are perennially packed, and you can also live the high life at newer entries like Suite 700 (1301 Ocean Ave., Santa Monica, 310.394.2791) at the Hotel Shangri-La and Drai’s (6250 Hollywood Blvd., Hollywood, 323.962.1111) at the W Hollywood. The only things cooler than the ice in your mint julep are the hip company and refreshing evening air.