Leonardo Da Vinci by Walter Isaacson

If you want to know everything possible about all the art Da Vinci produced than the 500+ pages are definitely worth it.  Isaacson has borrowed from many earlier biographies to see Da Vinci as more than an artist and he is just as interesting a person as we have come to expect.  My favorite section was on the Vitruvian Man and the authors's own take on the legacy of Da Vinci.  His attitude of Michelangelo is also an interesting read. Such a big person surely deserves such a big book.