When I posted photos of 320 North Sangamon last week, I counted the floors that were done and estimated, with my math skills, that it had topped out.
Nailed it!
Tishman Speyer has released a video (see link below) to commemorate the topping out. Congrats all around.
https://tishmanspeyer.ent.box.com/s/8z9x2jwuym8n5l5so0az26fg4y748zg9
Building Up Chicago 