north, Yonge Street along its southeastern periphery, and Wellington Street West to the south. The structures are connected to the PATH network, a series of underground pedestrian tunnels that connect downtown Toronto. Towers Commerce Court North The first building, now known as Commerce Court North, was opened in 1931 as the headquarters of the Canadian Bank of Commerce, a precursor bank to the current main tenant. The Canadian Bank of Commerce head office (now Commerce Court North) was designed by the American bank specialists York and Sawyer with the notable Canadian firm Darling and Pearson as the local architects of record. Structural engineering was provided by Harkness and Hertzberg. At the time of its construction, the building was one of the most opulent corporate headquarters in Canada and featured a public observation deck (since closed to the public for safety and liability concerns). The building is protected under Part IV of the Ontario Heritage Act since 1991. The Art Deco-style building is made of limestone and features a one-ton chandelier with over 70 lights in the lobby. Along the roofline (32 stories up), are 4 bearded figures along each side of the building. Each head is 24 feet high, representing Courage, Observation, Foresight and Enterprise. Later buildings In 1972, three other buildings were erected, thus creating the Commerce Court complex: glass and stainless steel glass curtain wall International Style Commerce Court West designed by Pei Cobb Freed & Partners with Page and Steele. Commerce Court West was the tallest building among the three later additions, at 57 storeys and it was the tallest building in Canada from 1972 to 1976. Originally, Commerce Court West's 57th floor was an observation floor. Commerce Court East (1972: 13 storeys) and Commerce Court South (5 storeys) are glass and applied masonry structures also designed by Pei Cobb Freed & Partners with Page and Steele in 1972. In 1994, Zeidler Partnership Architects was commissioned to renovate the Commerce Court urban plaza, the banking area at the base of Commerce Court West, and the below-grade retail area. There are 65 retail shops in the plaza below the complex. Technical details Central plaza Surrounding the Commerce Court complex of buildings is a plaza featuring a fountain in its centre, and a three-piece bronze sculpture by Derrick Stephan Hudson entitled, Tembo, Mother of Elephants completed in 2002. The sculptures were installed on site in 2005 on loan from