It has always been difficult to locate the audience for Frederick Wiseman’s documentaries. They are institutional profiles that capture moments of activity. There isn’t a call to action or requests for engagement. Any emotional connection that the viewer walks away with are his or her own. There is structure and maybe a narrative without much in the way of a climax in his documentaries. In the case of National Gallery, that narrative isn’t immediately apparent. It is a movie for the patient who enjoy learning facts serendipitously.