The best paintings are not the ones that are well-known but the ones that are hidden in dark corners of art galleries. They look very similar to hundreds of other art pieces but if you inspect them very carefully, you will spot that thing that makes them special.
Few years back I found one of them in The Cinquecento Corridor of Uffizi Gallery in Florence. Rather small and shy, the painting looks just as you would expect it – plenty of naked figures in a lovely garden with some swans, flowers and fruits. It just makes you think it is nothing special so you walk by quickly.
But if you are a bit more patient and you look at the bottom section of the painting, you will see two children, a boy and a girl, happily peeing into a pond.