Leonardo Da Vinci’s Mona Lisa might be the world’s most recognizable painting, but a group in Zurich claims it isn’t really one of a kind. The Mona Lisa Foundation is unveiling what it claims is a sister portrait painted 10 years earlier by Da Vinci.
Dutch National Archives
Former Beatle John Lennon would have turned 75 on Friday. Take a look at Lennon's life and career, from The Beatles and beyond.