Place Bonaventure is an office, exhibition, and hotel complex in Downtown Montreal, Quebec, Canada, adjacent to the city's Central Station. At 288,000 m2 (3,100,000 sq ft) in size, Place Bonaventure was the second largest commercial building in the world at the time of its completion in 1967. It is one of very few buildings in Canada to have its own postal code prefix, H5A.