The room at the Louvre that is home to the Mona Lisa is to be renovated, and for the first time in three decades, the painting will skip a day on show. “Now she is having her room renovated, to handle an average of more than 1,500 visitors an hour. She’ll be off display for one day on April 4 while curators install her in the upgraded digs. The Louvre fears irate crowds if Japanese and American visitors turn up to find an apology hanging from Lisa’s empty spot on the wall. While Rembrandts, Titians and El Grecos can all spend weeks in restoration, under study or on tour, the Mona Lisa has always remained on display.”