Skysill Rooftop Lounge at The Westin Tempe soars 18 stories above the city of Tempe as the Valley’s highest open-air rooftop bar. During the day, this chic venue offers a hip, relaxing daytime escape with its rooftop pool overlooking the vast Sonoran Desert. As the sun sets over the Arizona horizon, Skysill then transitions to a luxurious lounge where all levels of service and premium cocktails are elevated.