Chicago’s formative architectural history is not always visible if one were to walk around. Much like the city’s dozens of demolished high rises (more on that later), the never-built can also influence the realm of architecture despite lacking a physical presence. That is why every Sunday leading up to Halloween, YIMBY will cover a cancelled tower of increasing height, what lead to its demise, and what it might have looked like on the skyline. The model screenshots will retain previous weeks’ towers, though they will not be carried over to standard posts.