One Canada Square One Canada Square One Canada Square is a skyscraper in Canary Wharf, London. It is the second tallest building in the United Kingdom at above ground level containing 50 stories. One Canada Square was designed by Cesar Pelli, Adamson Associates and Frederick Gibberd Coombes. The design and shape are based on earlier precedents buildings that include Brookfield Place and Elizabeth Tower. The building is clad with durable stainless steel. One of the predominant features of the building is the pyramid roof, which contains a flashing aircraft warning light, a rare feature for buildings in the United Kingdom. The distinctive pyramid
Canada House future Macdonald House, located at 1 Grosvenor Square in Mayfair, in 1961. In 1993, Canada House was closed by the Canadian government as a cost-cutting measure with the intention of selling it. A change of government in Canada saw this decision reversed and renovations were planned instead, beginning in 1997. The building was officially reopened by Queen Elizabeth II, as Queen of Canada, in May 1998. To commemorate the reopening, a detachment from the 3rd Battalion, Princess Patricia's Canadian Light Infantry, came to London and mounted the Queen's Guard at Buckingham Palace. Canada House was closed again in 2010 and