Imposing venue and befitting venue, peaceful, FREE (well not exactly, your tax dollars go there, but great ROI). The Flemish collection is awesome, Vermeer, Rembrandt, and others. The Italian renaissance collection was sublime, Tintoretto, Boticelli, Fra Angelico, etc., etc. Great American masterpieces, Sargent, Copley, and Whistler. Can not visit DC and not go.