Leonardo is well known for his artistry and paintings, such as Last Supper (Ultima Cena or Cenacolo, in Milan) 1498, and the Mona Lisa (also known as La Gioconda, now at the Louvre in Paris), 1503-1506. Though there is significant debate whether Leonardo himself painted the Mona Lisa, or whether it was the work of his students, it is known that it was probably his favorite piece. He most likely kept it with him at all times, and not travelling without it. Thousands of people see it each year in the Louvre, perhaps drawing their own interpretation on what is known as the Mona Lisa's most infamous and enigmatic feature - her smile.…