A characteristic feature of the American landscape is subject of the latest exhibition at the Canadian Centre for Architecture, Montreal - the lawn. 'Bungalows in tract developments, suburban corporate headquarters, and the White House are all alike in that they sit behind a lawn: a carefully contrived patch of 'nature' that lies open to the sky and to a multitude of uses and meanings,' say the curators. As well as photographs, they promise 'Space Age lawnmowers, lovingly fetishised lawn ornaments, sports shoes with high-tech cleats . . . all combined into an interpretative three-dimensional installation.' cca director Phyllis Lambert adds: 'The lawn is a site of imagination - an emerald screen on which are projected American dreams and nightmares.' The American Lawn: Surface of Everyday Life is at the cca from 16 June to 8 November, and subsequently will tour.