1000 de la Gauchetière is a skyscraper in Montreal, Quebec, Canada. It is named for its address at 1000 De la Gauchetière Street West in the city's downtown core. It is Montreal's tallest building. 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 the building is its atrium, which holds a large ice skating rink.