Marina_City (MC) "The complex consists of two 587-foot (179 m), 65-story apartment towers, opened in 1963" https://en.wikipedia.org/wiki/Marina_City#Architecture
https://upload.wikimedia.org/wikipedia/commons/c/cb/Marinacity466.JPGhttps://upload.wikimedia.org/wikipedia/commons/4/41/The_Butterfly_and_First_Baptist_Church_in_Vancouver_04.jpg
https://skyscraperpage.com/cities/?buildingID=107021 The 57 story Butterfly tower in Vancouver is 586 feet, so its only 1 foot shorter than Marina_City. MC was able to fit in 65 floors into the same height.
https://reveryarchitecture.com/projects/butterfly/
https://westbankcorp.com/body-of-work/the-butterfly
https://www.canadianarchitect.com/revery-unveils-design-of-the-butterfly
https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Chicago
https://upload.wikimedia.org/wikipedia/commons/c/cf/Chicago-00.jpg Marina City is in the top, middle part of this picture and is hardly noticeable on the Chicago skyline.
https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Chicago#Tallest_buildings
Being from smallminded Vancouver, its always amazing to see how so many cities are allowed to be on a big scale.