Cy twombly 's paintings are today on view at dulwich picture gallery in south london , cheek by jowl with works by the 17th century master nicolas poussin , and a stone 's throw from paintings by rubens and rembrandt .
With a good eye for art , he had begun early to assemble his own collection , which by now included works by the contemporary italian painter canaletto , as well as watercolors and drawings by such old masters as poussin and raphael .