One Canada Square of London."" One Canada Square was originally designed to be high at 55 storeys, but that penetrated the permitted projection height of the flight obstruction area of the airport approach district to London City Airport, but this was extended to a height of above kerb level in consideration of the fact that One Canada Square was on the external zone of the airport approach. To comply with air traffic safety regulations, the architects took five floors off the tower. The final height of was permitted, otherwise, the developers would have had to dismantle what was necessary to fit the height
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