This exhibition was initiated to commemorate the 100th anniversary of the existence of the federal state of Canada.
Marc Drouin, the Canadian president, initiated the idea when he returned from Expo 58. Montreal's bid was registered by the BIE at the end of 1959, but unfortunately the BIE gave preference to Moscow's bid to commemorate the 50th anniversary of the October Revolution. Later, luck turned on Montreal's side when the USSR withdrew its bid.
Work could begin and it was decided that the event would take place on two islands in the middle of the St. Lawrence. In fact, the architect Frederick G. Todd kept St. Helena Island and artificially created Notre Dame Island to the south of St. Helena Island. 1.2 million cubic metres of earth were brought in to gain 120 hectares of land on the river.
At the same time, Montreal took advantage of the opportunity to modernise its infrastructure, which made Expo 67 the most expensive exhibition of its kind.
The theme "Man and His World" was dealt with in 9 thematic pavilions, divided into 17 main points, which presented the activities of man in all its fields and its possibilities of action.
Expo 67 was a great success, bringing together 62 nations (which was a record for the time) and welcoming 50 million visitors.
Moreover, the infrastructures implemented by the city of Montreal during this exhibition could be reused and even improved afterwards, as was the case for the Parc de la Ronde, so the expenses for this event were not useless.