Upon completion, the building was billed as the largest of its kind in North America. The name "Coliseum" was given to the building in 1922, in time for the opening of the CNE. The main entrance was to the north, along Manitoba Drive. The southern side of the building was along the main TTC streetcar rail lines serving the CNE, which separated the Coliseum and Industry Buildings to the north, and the later Engineering and Electrical Building (1928) to the south. In 1926, additions were built and the complex was claimed to be the largest structure of its kind under one roof in the world. In 1931, the Horse Palace was built next door to provide a permanent building for the stables of the Winter Fair. From 1942 to 1945, the building was used as a training base for the Royal Canadian Air Force during World War II and known as the 'Manning Depot'. A photo of it as the RCAF Manning Depot is in the New Westminster Museum and Archives # IHP9562-003. After the war, it mainly hosted equestrian events for the Royal Agricultural Winter Fair, the CNE and other events. The arena was also used as a horse barn. In time for the 1963 CNE, the southern facade was reconstructed. As part of the renovation, the southern facade was reclad with black, grey and white siding and a new front plaza was built, with a large "COLISEUM" sign on top. The CNE spent million from 1960 until 1963 on "face-lifting" the Coliseum. In 1997, the National Trade Centre (now the Enercare Centre) exhibition complex was built. The new project removed the 1963 entrance and cladding, restoring the original facade, although the cupola towers on the southern facade had been removed in the 1963 renovation. Access to the Coliseum was moved to the western entrance of the exhibition complex through a hall known as Heritage Court. In November 2002, the City of Toronto agreed to an extensive renovation of the Coliseum to attract a professional ice hockey team to the arena. At a cost of million, the arena's capacity was expanded from 6,500 to 9,700 by building a new higher roof, lowering the floor, adding new seats in the expanded area and the installation of 38 private suites. Borealis Infrastructure contributed million up front and million of borrowed funds in return for a 49-year lease to the arena. The City of Toronto invested million in the project and guaranteed Borealis' loans, while remaining the owner of the building. In 2003, Japanese office supply company Ricoh purchased the naming rights to the new facility for million over ten years, with an optional five-year extension.