One of the world’s most remarkable outdoor art treasures lies hidden in plain sight along Chicago’s Lake Michigan waterfront — carvings in the stone revetments that line the lakeshore, many of them spectacular, most by anonymous creators, and almost none of them noticed by the millions of people who enjoy the city’s unobstructed shore. Join William Swislow, who has photographed thousands of these carvings, including many in Hyde Park, to view examples of this art underfoot, to hear its story, and to learn about the carvers who made it and the shoreline that was their canvas.