Tucked beneath the lobby of the tallest building in the state, this sprawling underground atrium originally served as a mini-mall for the building's 2,100 employees. Recently remodeled as part of this 40-story skyscraper's $14 million upgrade, most of the stores are long gone, but in-the-know downtowners still ride the escalator down to hidden gems like the Coin Room cafeteria. More important, this surprisingly airy basement is also a soothing reminder of 1970s-style corporate Zen. Sitting here in climate-controlled perfection, surrounded by well-dressed business types and staring up at the high-rises out of every window, you're transported to a time when downtown Phoenix really was the center of the Valley's universe. Now if someone would just bring back the old penthouse dining space spanning the 37th and 38th floors and featuring killer 360-degree city views from nearly 500 feet above the Valley floor.