The John P. Robarts Research Library, commonly referred to as Robarts Library, is the main humanities and social sciences library of the University of Toronto Libraries and the largest individual library in the university. Opened in 1973 and named for John Robarts, the 17th Premier of Ontario, the library contains more than 4.5 million bookform items, 4.1 million microform items and 740,000 other items. The library building is one of the most significant examples of brutalist architecture in North America. Its towering main structure rests on an equilateral triangular footprint and features extensive use of triangular geometric patterns throughout. It forms the main component of a three-tower complex that also includes the Thomas Fisher Rare Book Library and the Claude T. Bissell Building, which houses the Faculty of Information. The library's imposing appearance has earned it the nicknames Fort Book and The Peacock/Turkey. Architecture The design of the Robarts Library complex was headed by Mathers & Haldenby Architects with consultation from Warner, Burns, Toan & Lunde, the New York architectural firm whose earlier works included the libraries at Cornell and Brown universities and who specialized in precast concrete buildings. Coinciding with the Canadian Centennial celebrations, the initial plan was expanded to add three more storeys to the original design. Construction of the library began in 1968 and completed in 1973, at a cost of over $40 million. Robarts Library occupies a site on a field of open space and mature tree cover. The building rests on an equilateral triangle footprint with each side measuring , the same length as a Canadian football field from goal post to goal post. The building is oriented such that one side of the equilateral triangle faces west while the other two sides face northeast and southeast. From the southeast corner, the building appears as a peacock. The elevation is mostly concrete, albeit differing in textures and directionality: smooth concrete lines the façade in a horizontal manner, the rough concrete lining vertically. The steel-framed windows are situated onto the bays protruding from the façade, and are reminiscent of overhanging towers in medieval castle architecture. The bay windows seem to elevate upwards, opening up the two lowermost levels into voids enclosed with steel-framed glazing, making these elements seem lighter than they really are. To stretch further one's imagination, it is as if these elements are elevators that transport the "scholar[s] anxious to escape the noise and