When the Sheraton Centre complex was designed, they were careful to situate the hotel tower at the west end of the site. The idea was to leave an open vista from Nathan Phillips Square, giving a view over the lower 12 storey building to where the new financial district was being built - Mies's TD Centre towers and Pei's Commerce Court tower, along with whatever architectural marvels were to follow. What followed was a pretty mixed bunch, architecturally, and it looks as if that tradition will continue with this proposal.