Ann Hamilton’s large-scale multimedia installations, including the event of a thread, recently at the Park Avenue Armory, and "palimpsest," now on view in the Hirshhorn’s "Over, Under, Next," poetically respond to the architectural presence and social history of their sites. Hamilton’s ephemeral environments create immersive experiences, often from a dense accumulation of mundane materials. A Distinguished University Professor of Art at the Ohio State University, Hamilton is also a member of the Hirshhorn’s board of trustees.