When following development in a major city it can be hard to keep track of construction and visualize what projects are going where, especially during periods of rapid growth like Chicago is experiencing at the moment. To help approach construction from a wider perspective, we created our first highrise tracking map in October of 2014, which at the time, showed 14 towers under construction throughout the greater downtown area. That number rose to 18 towers in early 2015, then climbed even further to 21 highrise projects by last autumn. Today, the number has more than doubled from 14 to 34 active highrise construction sites in Chicago in just 15 months. With no less than six of the original 14 projects completed and removed from the list, the 34 building figure is all the more impressive.