1000 de la Gauchetiere is a skyscraper, the tallest building in the province of Quebec (measured to the roof top). 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. The street-level architecture projects out in a distinct style, reducing the visual and psychological impact of the entire building from this viewpoint. It is an example of Postmodern architecture, with a distinctive triangular copper roof as well as four copper-capped rotunda entrances at the tower base corners.