One Canada Square Canada Square was completed and open for business. His Royal Highness The Duke of Edinburgh officially opened One Canada Square on the morning of 26 August 1991, and unveiled a commemorative plaque at the entrance to the building. Hundreds of construction workers attended the opening ceremony. The Duke of Edinburgh addressed some 800 invited guests, many of whom had been involved in the project. He spoke of the "large, airy space and clean, efficient office layout", as he declared the building ready for business. The attendees heard a specially-commissioned piece of music performed by a 30-strong choir. Paul Reichmann, Chairman
Former Geological Survey of Canada Building serve as the offices and museum of what was then called the Geological and Natural History Survey of Canada. The museum and its collections, which attracted 9,549 visitors in its first year, would later become the genesis of Canada’s national museums. The Sussex Drive section was rebuilt in 1881 on its original footprint. The Geological Survey of Canada remained in the building until 1911 when it moved to the Victoria Memorial Museum. The building was renovated again, this time to accommodate the federal Department of Mines, and a new laboratory was added to the George Street wing in 1917. Former