This is the second of six chilled water plants planned for the Loop; its State Street predecessor also received a Distinguished Building Award. The plants are essentially giant icemakers that provide an environmentally friendly way to cool office buildings. The 40,000-square-foot plant is at the south end of its site to visually screen its Wacker Drive frontage from the adjacent Congress Expressway. The façade of the world's largest ice tank is articulated to relate to the expressway piers and to express the bundled glycol coils inside the tank. The rooftop galvanized screen takes its visual esthetic from the adjacent freeway signage structures as it masks evaporative condensers. In the jury's opinion, "To make a technical building like this come out as architecture is a great accomplishment."