The Penn Museum (officially, the University of Pennsylvania Museum of Anthropology and Archaeology) has theoretically been available to visitors since its opening in 1887, but it was actually used almost entirely by researchers until 2012. Since then, attendance has risen to about 180,000 a year — a figure which should leap dramatically starting this weekend, when 10,000 square feet of new exhibition space will house hundreds of items never before shown to the public. – The New York Times