The Chiaravalle, a two-meter high clock conceived by Dolce & Gabbana, incorporates some of Leonardo da Vinci’s ideas. It is on permanent display at the Veneranda Biblioteca Ambrosiana in Milan. It was made as a tribute to the 500th anniversary of Leonardo’s death, in 1519, and created as part of its Alta Orologeria, or high watchmaking, collection of one-of-a-kind pieces.