The building’s form was shaped by analysis of the climate. The tower faces south, curving towards the sun to take advantage of daylight and heat, while maximizing the perimeter for cellular offices with views of the Rocky Mountains.

By turning the convex façade into the prevailing wind, the structural loading is minimized thus reducing the amount of steel required for the inherently efficient diagrid system. Each triangulated section of the structure spans six storeys, providing superior structural efficiency, while helping to visually break down the scale of the building. At the time of completion, it was the first time a triangular diagrid has been applied to a curved skyscraper in North America.

Photo of The Bow

Project Details

Calgary, Alberta
Matthews Southwest Developments Ltd.
Complete, 2013
2,000,000 sq.ft. (185,800 sq.m.)

Architecture, Interior Design

Design Architect: Foster + Partners
Executive Architect: Zeidler

Calgary Mayor’s Urban Design Award, 2013
Council on Tall Buildings and Urban Habitat – Best Tall Building in the Americas, 2013
Emporis – Skyscraper Award, 4th Place, 2012
Canadian Institute of Steel Construction – National Award, 2012
Alberta Steel Design – Awards of Excellence, 2012
Glass Magazine Awards – Most Innovative Energy Efficient Glass Project (Commercial, Retail, Fabrication), 2012
Alberta Chapter American Concrete Institute – Awards of Excellence, 2011
Canadian Institute of Steel Construction – Ontario Awards, Award of Excellence, 2011