Chicago-based Skidmore, Owings, and Merrill (SOM) have unveiled new images of their proposed 18-story office tower in the trendy Fulton Market area of Chicago. "The Porch," situated on 330 North Green, will feature a five-story open-air deck, and series of luxury amenities to support the new office environment. The 670,000-square-foot (62,000-square-meter) SOM scheme features floor-to-ceiling windows set behind exposed steel, with a center core construction maximizing natural light and open space.