Well -- it was a crazy minute, but the Smoke Stack at the Mississippi River at the St. Paul High Bridge came falling down. It was described in the article as an implosion, but the way the video is shown, it seems very likely that they meant for it to tumble like a felled tree, as it did.
The smoke stack held a falcon box for several years, but that box was removed in January before the falcons returned from their winter journey.