Of course, everyone comes to see Rembrandt's 'The Night Watch'. Personally, there were other paintings that I found much more appealing.
Winter Landscape with Skaters, Hendrick Avercamp
Though I can hardly omit this Vermeer, The Milkmaid
Floral Still Life by Hans Bollongier.
I highly recommend spending a day here at least. I really wanted a great photo of this sign but the Heineken folks were busy filming a commercial so their trucks are in the way.
Bonus: Daylily 'Royal Flair'