Construction of the Pierre Lassonde Pavilion began in 2013, with the building opened to the public in June 2016.[1] The pavilion has a glass-enclosed access point from Grande Allée to the rest of the museum complex further within Battlefield Park.[13] The Office for Metropolitan Architecture designed the 14,900 square metres (160,000 sq ft) pavilion, with the lead partners being Jason Long and Shohei Shigematsu.[14][15] During the construction of the building, renovations were also undertaken to the museum's tunnel system, transforming them into viewing spaces.[13] The pavilion largely uses glass and steel for its building material, in an effort to foster transparency between the museum and the general public.[13] The building is adjacent to Saint-Dominique Church.[13]