The site includes more than 20,000 images, which means you could be looking at Camille Pissarro's Self-Portrait right now, or Leonardo da Vinci's Ginevra de'Benci, or even El Greco's Laocoön (if you're into that sort of thing), instead of reading this blog post.

Earl A. Powell III, director of the National Gallery, said the site celebrates the Gallery's 71st anniversary, and "supports research, teaching, and personal enrichment; promotes interdisciplinary research; and nurtures an appreciation of all that inspires great works of art."