Surprisingly, I was comfortable sketching with gloves -- which doesn't happen often -- as they were neither cold nor cumbersome. After about 45 minutes or so, it started snowing, so I immediately came back inside so that the ink wouldn't run due to the snow. Once inside, I walked through the building to get the lay of the land, and decided that the main atrium space -- looking toward the big sculpture -- was the most interesting perspective. Fortunately I found a cushioned seat in the corner, and was able to stretch out a bit while I sketched.
I had to pause the sketch before I was quite done, as 12:30 arrived. After sharing our sketches, I went back to the seat and finished the sketch -- and added a "meta" finishing touch at the bottom.