Raymond Moriyama and Associates put a lot of symbolism into the construction of RMOC headquarters (now Ottawa City Hall, 110 Laurier Ave. W). For example, the pillars/columns/walls around the rotunda represent the various former municipalities.
Also interesting are little quirks like this stained-glass window. I managed to catch it at the right hour one morning as it shone a circle of light onto the floor:
[Look for more one-photo posts under the label Singles]