This evaluation provides feedback from a tracking and timing study from the project "Seeing: The Interaction of Physiology, Culture, and Technology" at the Exploratorium. The evaluation concludes that Seeing is a large, complex collection of loosely related exhibit elements that attract and hold visitors’ attention well, but not exceptionally well. Yet, given the size and scope of the exhibits, a longer average time and more stops would not be expected. The individual interactive elements range from many that are modestly engaging, to some that are highly engaging, with a few exceptionally