A touring exhibition on Renaissance genius Leonardo da Vinci in on show at Romes Palazzo Venezia museum until August 30 th after a highly successful world tour, which began in 2006. The exhibition, which explores Leonardos contribution to science, technology, art and culture and displays many of his ingenious models and machines, is  entitled The Mind of Leonardo, the Universal Genius at Workâ It was Italy most popular exhibition in Japan for over thirty years, drawing over 300,000 visitors during its three-month stay in Tokyo in 2007.