Today marks Canadian Thanksgiving, and to celebrate the occasion we've rounded up some of Canada's best architecture. Our five selections represent five Canadian cities, each with a unique architectural sensibility. We begin in Toronto with the Royal Ontario Museum addition by Studio Daniel Libeskind, a striking intervention using prisms of glass and steel fused to a 102-year-old museum structure; next we go to Montréal for Habitat 67 by Moshe Safdie, an interlocking modular housing project designed for the World Exposition of 1967; to Calgary for Santiago Calatrava's understated Peace Bridge, a stunning glass-encased red lightning bolt spanning the city's widest waterway; then to Winnipeg's Old Market Square Stage by emerging firm 5468796 Architecture, a chameleonic performance space wrapped by a mesh curtain of steel cubes; and finally to the outskirts of Vancouver for the Richmond Olympic Oval, a masterpiece of engineering and the centre of attention during the 2010 Vancouver Winter Olympics. Enjoy, eh.

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