Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. TD Canada Trust Tower Calgary - TD Canada Trust Tower is an office tower in Calgary Alberta. Located at 421 7th Avenue SW it stands at 162 m (531 ft) or 41 stories tall and sits above a four-level retail podium (The Core Shopping Centre). It was designed by WZMH Architects in the postmodern style and was built by PCL Construction in 1991. It has a total area of 65000 m2 (700000 sq ft) and is serviced by 15 elevators.
Building