FILE--Visitors to Expo 86 in Vancouver, B.C. are dwarfed by the Expo Centre, an exhibit which contains a theatre and various displays. Twenty years after Expo 86 changed Vancouver to a destination point on tourism maps, both proponents and critics are looking back. The Expo success will be used as a model for politicians and planners as they prepare for the 2010 Winter Olympics. (CP PICTURE ARCHIVE)