Visitors watch a video on "L'Arc de Triomphe, Wrapped" in Paris, Tuesday, Aug. 24, 2021.  The "L'Arc de Triomphe, Wrapped" project by late artist Christo and Jeanne-Claude will be on view from, Sept. 18 to Oct.  3, 2021.  The famed Paris monument will be wrapped in 25,000 square meters of fabric in silvery blue, and with 3,000 meters of red rope.  (AP Photo / Adrienne Surprenant)

Why Arc de Triomphe in Paris is being wrapped in silver and blue fabric