Railway Exchange Building - Credit: Wikimedia Commons
The Railway Exchange Building is an , 21-story high-rise office building in St. Louis, Missouri. The 1914 steel-frame building is in the Chicago school architectural style, and was designed by architect Mauran, Russell & Crowell. The building was the city's tallest when it opened, and remains the second-largest building in downtown St. Louis by interior area, with almost of space. Read more on Wikipedia
Source: en.wikipedia.org