Still to this day one of the most recognizable buildings in Chicago, the Sullivan Center was completed back in 1903. The building plans were drawn up after the Chicago Great Fire of 1871 displaced a pair of merchants. Unsatisfied by their current arrangements, they approached Sullivan to design and build them a giant skyscraper. Sullivan designed a massive steel-framed building that had large bay windows along the first floor to give stores the ability to display to pedestrians. The Sullivan Center became a National Landmark in 1975 and in 2013, Target moved in and opened its first store in Chicago.