High Quality Content by WIKIPEDIA articles! The Octagon Centre, built in 1983, is a multi-purpose conference centre and music venue at the University of Sheffield. Situated in the Western Bank campus, it is joined by a skyway to University House and comprises an eight-sided auditorium (seating up to 1,250, standing/fire capacity 1,600), offices, meeting rooms, and a lounge with bar and patio As a University building, The Octagon is used for a variety of purposes, including examinations, lectures and graduation ceremonies.