1000 de la Gauchetière is a skyscraper in the Canadian city of Montreal and the tallest building in the province of Quebec. It is named for its address at 1000 De la Gauchetière Street West in the city's downtown. It rises to the maximum height approved by the city (the elevation of Mount Royal) at 205 m (673 ft) and 51 floors. A popular feature of this building is its atrium which holds a large skating rink.