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, as the 23rd tallest building in Canada and the 6th tallest skyscraper outside of Toronto, as of 2023. The west tower overtook the Calgary Tower as the tallest free-standing structure in Calgary from its completion in 1984, until being surpassed by the neighbouring Bow in 2010. The office towers encompass 158,000 m2 (1,700,000 sq ft) of rentable office space with the complex also containing 23,000 m2 (250,000 sq ft) of retail and underground parking area. A glass-enclosed walkway provides shelter and easy access to the surrounding buildings.
Petro-Canada Centre in 1991 (now Suncor Energy Centre)
The Calgary Tower is a 190.8-metre (626 ft) free standing observation tower in the downtown core of Calgary, Alberta, Canada. Originally called the Husky Tower, it was conceived as a joint venture between Marathon Realty Company Limited and Husky Oil as part of an urban renewal plan and to celebrate Canada's centennial of 1967. The tower was built at a cost of CA$3,500,000 and weighs approximately 10,884 tonnes, of which 60% is below ground. It opened to the public on June 30, 1968 as the tallest structure in Calgary, and the tallest in Canada outside Toronto. It was renamed the Calgary Tower in 1971.
Calgary Tower
The Calgary Tower in 1978, showing the original red and yellow paint scheme
The upper deck
A skyline view from the tower