From childhood photos snapped atop Santa's lap to the inevitable onslaught of picture-filled greeting cards that arrive in your mailbox each December, Christmas is the most visual of holidays. And it always has been, with a diverse slate of artists from Caravaggio to Banksy getting in on the holiday fun. But some Christmas images are just more iconic than others. These are The 20 Most Important Christmas-Themed Art Pieces of All Time.

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