Expo 67, formally known as the 1967 International and Universal Exposition, commenced in Montreal at a time when Canada was celebrating its centennial. The fair's central theme was 'Man and His World,' designed to showcase progress in areas including technology, sustainable practices, and cultural diversity. The opening ceremony featured spectacular performances, including a live orchestral piece and artistic displays that represented the participating nations. This momentous event was attended by around 70 dignitaries from various countries, including Canada's Prime Minister, Lester B. Pearson, who emphasized the significance of cultural exchange and international cooperation.

One of the most notable aspects of Expo 67 was its innovative architectural designs, particularly with the geodesic dome of the U.S. pavilion, which became a symbol of the fair. The event also served as a platform to address contemporary issues such as urbanization and social change, providing conceptual ideas and practical solutions drawn from multiple countries. Over the course of six months, Expo 67 attracted millions of visitors, solidifying Canada's status as a significant player on the world stage and inspiring numerous subsequent world expositions.

Moreover, Expo 67 became known for its engaging exhibits and experiences that combined art, science, and cultural displays, fostering a spirit of optimism and imagination that resonated with visitors. It was also one of the first major international events to leverage television broadcasts to reach global audiences, marking the beginning of a new era in the ways large events were showcased and experienced. The success of the fair not only promoted tourism but also bolstered Montreal's significance as a cultural hub in North America.