On February 20, join us from anywhere in the world for an online celebration of the American architect Louis Kahn, who was born 120 years ago on this day in Estonia. In this program, see a discussion with some of the people closest to Kahn: distinguished landscape architect Harriet Pattison; her son, Oscar-nominated filmmaker Nathaniel Kahn; and William Whitaker, Curator, The Architectural Archives, University of Pennsylvania Stewart Weitzman School of Design.