“I can’t stop,” Ryan Chester said, seated in a window of the Wrigley Building, the south side of the Chicago Riverwalk stretching out before him, scattered with tourists and workers on lunch breaks. “I really can’t,” he said again. He’d already put in so much. He’d already drawn 5.5 miles of the Chicago River and the buildings looming beyond its banks, sketching by hand — drawing one foot of downtown Chicago a week. He began 2019, and finished 2021, using the same continuous scroll of bond paper. By the time he was done, Chester — an architect with the firm JGMA — had a 55-foot sketch of Chica…
