This museum proudly houses an extensive collection of historical and traditionally designed Hodinöhsö:ni’ pieces, from decorative and every-day-use items to archaeological artifacts. Historical documents include articles, special publications, family photographs and various multi-media productions regarding the Onöndowa’ga:’ and Hodinöhsö:ni’; reinforcing what it means to be Seneca. The 33,000 sq. ft., $15 million building has hundreds of items and includes an auditorium for up to 600 people. The translation of “Onöhsagwë:de’” comes from the Seneca word of “onöhsogaën” which means, “house opening” such as a doorway, window, or chimney. The new center replaces the original museum, which opened in 1977.