The Last Supper – Leonardo da Vinci . This world famous painting is not shown in a museum, but rather covers the back wall of the dining hall at Santa Maria delle Grazie monastery in Milan, Italy. It was painted by the most famous artist of all time, Leonardo da Vinci in the late 15th-century. The painting depicts the scene of The Last Supper of Jesus with his disciples. Seeing this masterpiece in the small monastery is truly one of the best attractions Milan has to offer.