900 Randolph, the 43-story, 300-unit apartment tower from Related Companies and Morris Adjmi Architects, has grown pretty tall out in the West Loop. I’m told crews were pouring concrete on level 37 when I stopped by Wednesday. I was also told to expect topping out early in early October, along with a pleading “we’re hoping the windows arrive by then.” Supply chain delays. Not at all unusual these days.

But Thursday came the above tweet from Twitter user @MrFernGully2U, who captured the first few pieces of glass on the exterior. One day. I got there one day too early. But thanks to the Fern Gully for looking up, and looking out for us.

Enjoying the photos? Metra and CTA rides (and Amtrak trains to Milwaukee), Zipcars, Divvy Bikes, camera lenses, domain fees, snacks & energy drinks, and comfortable walking shoes add up. You can help offset expenses by making a greatly-appreciated donation to Building Up Chicago.