Wilfrid Laurier University (commonly referred to as Laurier or WLU), is a Canadian public research university located in the heart of Waterloo, Ontario, Canada. Laurier has several other campuses, such as in Toronto, Ontario (Canada's largest city), Brantford, Ontario, Kitchener, Ontario and in Chongqing, China. It is named in honour of Sir Wilfrid Laurier, the seventh Prime Minister of Canada. Laurier offers a full range of undergraduate and graduate programs in a variety of fields. Laurier is one of the fastest-growing universities in Canada (enrollment more than doubled from 1997 to 2006). The main campus in Waterloo sits in the heart of the "Silicon Valley North" of Canada, as the "KW" area and Ontario more broadly speaking has the largest concentration of tech companies in North America apart from California.