1915: The Harrison Wing opens, welcoming visitors to soaring galleries housing collections from Asia and to events in an immense auditorium. Named for visionary Penn Provost (1894 – 1910) and Museum President (1916 – 1929) Charles Custis Harrison, the Harrison Auditorium is an architectural wonder: one of the largest unsupported masonry floor-domes in the world spans 90 feet and supports the floor of the Rotunda above. The Guastavino engineering firm drew on ancient Catalan construction traditions to achieve this feat. The lack of pillars created a space with 800 unobstructed-view seats.