For our money, there's no finer commercial lobby anywhere in town than the one in the Rincon Center development, adjacent to the lovingly restored former 1930s Rincon Annex post office, and much of it has to do with the dramatic 150-foot-tall "rain column" dripping recycled water from the skylighted ceiling and generating a soothing roar from the pool in the lobby's center. A great place to stake out one of the many tables shared by a swarm of ethnic eateries that line the lobby's perimeter, close your eyes, and enjoy the tranquility-inducing sounds of falling water.