Pan-American Exposition, Buildings at Night, by Unknown, 1901, Smithsonian Archives - History Div, At the Pan-American Exposition, Buffalo, New York, a view of several of the buildings and structures lit up at night. The photograph was taken from a window or balcony of one of the buildings. The Smithsonian coordinated all of the U.S. Government exhibits and prepared a display on its activities and collections for the exposition..