The Suncor Energy Centre, formerly the Petro-Canada Centre, is a 181,000-square-metre (1,950,000 sq ft) project composed of two granite and reflective glass-clad office towers of 32 floors and 52 floors, in the office core of downtown Calgary, Alberta. The Council on Tall Buildings and Urban Habitat lists the west tower (215 m or 705 ft as measured to top of the structure), as the 23rd tallest building in Canada and the 6th tallest skyscraper outside of Toronto, as of 2023. 🔽.