Probst and White completed the work. The terminal was among the first to anticipate automobile traffic; it was first designed in 1909, one year after the Model T entered production. It was designed with ticket offices, concourses, platforms, waiting and baggage rooms, and shops, all on a single level, meant to be easy to navigate. At opening, the terminal also housed a hospital, chapel, and jail cell. The main building, a square Neoclassical structure, takes up one city block. Its architectural style contrasts with modern glass-faced buildings around it. The station has wide porticos and large colonnades on its exterior. The street-level entrances utilize Indiana limestone. The station featured a large concourse along the river, made with marble, glass, and iron. Massive steel arches held up the roof, and several stairways led passengers down to the platforms. Great Hall At the building's center is the Great Hall, a -high atrium capped by a large barrel-vaulted skylight. The room has connecting lobbies, staircases, and balconies. Enormous wooden benches are arranged in the room for travelers to wait for connections, and two specially-designed underground taxicab drives were built to protect travelers from the weather. The room's columns are of textured Roman travertine marble, with leafy golden Corinthian capitals. The ceilings and insets are coffered, with decorative rosettes. Two statues by Henry Hering —Night and Day — look down on passengers, symbolizing the 24-hour operation of the railroads. The statue Night holds an owl, while Day holds a rooster. Related structures Power station The Chicago Union Station Power House is a decommissioned coal-fire power plant that provided power to Union Station and its surrounding infrastructure. Located on the Chicago River, north of Roosevelt Road, it was designed in the Art Moderne style by Graham, Anderson, Probst and White in 1931. The power plant was decommissioned in 2011. It was included in Preservation Chicago's 7 Most Endangered list in 2017 and 2020, as Amtrak has plans to demolish the building. Post office The same architecture firm that designed Union Station also designed the Old Chicago Main Post Office, a post office atop the station's southern tracks. The post office, opened four years before Union Station, utilized the rail system, funneling mail to and from the trains below. An expansion in 1932 made the structure the world's largest post office. Construction over the station's train shed The large amount of land above the tracks and