Get On This Day delivered free to your inbox: br br br 1512 – The ceiling of the Sistine Chapel, painted by Michelangelo, is exhibited to the public for the first time. br br br br br 1993 – The Maastricht Treaty takes effect, formally establishing the European Union. br br br br br br 1520 – The Strait of Magellan is first discovered and navigated by European explorer Ferdinand Magellan. br br br br br br 1962 – Anthony Kiedis, American singer-songwriter, is born.