Note the green roof of the Toronto Dominion Centre banking pavilion to the right.
Leslie Rebanks, 1975, International Style
The exterior diamond lattice of steel provides form and function. With such a load-bearing exoskeleton and a solid central core, no interior columns are needed providing large open interior spaces.
It is sad to see the facade of this 1968 International Style tower being removed and replaced with temporary walls. The office tower will be reclad in glass and 37 floors of condominiums will be added above.