PARIS (AP) — Much about Leonardo Da Vinci remains an enigma: the smile of the "Mona Lisa"; why the world's most famous painter left so many works unfinished; and more recently, who bought the contentious "Salvator Mundi."

A new exhibit at the Louvre, however, opening Thursday and marking the 500th anniversary of the Italian master's death, tries to sketch out as complete a picture of the artist and thinker as possible.

Drawing from the Louvre's permanent collection and institutions around the world, the exhibit brings together some 160 works. They include Da Vinci masterpieces, dozens of studi...