On May 28, 1999, 22 years of hard work repairing and restoring Leonardo da Vinci’s masterpiece, The Last Supper, was finally completed and the painting became once again open for public display. Believed to have been started around 1495 with a 1498 finish date, the famous painting had suffered environmental damage and human abuse throughout its existence, the trials and tribulations of its 500+ year existence qualifying it for consideration as the most abused painting in history.