The architectural practice of Foster + Partners designed The Bow skyscraper located in the city of Calgary, Canada.
With 58 floors and a height of 247 meters, this is currently the tallest building in the city and also the tallest in Canada with the exception of Toronto. The shape of the structure was determined through an analysis of the climate and the convex surface is designed to reduce the effect the strong winds have on the building, while the other side with its concave façade is placed toward the sun.
The building has a triangular grid structure with sections that raise over six floors and which reduce the visual mass of the surfaces so that it improves the efficiency of the entire project. Behind the concave façade are several atria which improve the insulation of the building and reduce its energy consumption.
The atria have three sky gardens that offer a good area for social interactions between the staff in the offices and it also includes meeting rooms and catering between the trees.