Everyone knows about the CBE building and the planetarium, but I'd like to highlight some lesser-known examples or brualist architecture.
The Bank of Canada Building / 404 Sixth is one of my favourite office buildings in town. The problem with most brutalist buildings is that they generally have very poor 1960s-style urban design. This is not the case here as the building has a generous amount of streetfront retail and is well proportioned for the streetscape. It's just a well executed design:
St. Luke's Catholic Church - I had no idea this building existed until recently but this is another great brutalist design. I haven't been inside but it the interior design looks very impressive.