Sapphire Tower
Canada
The 1019th tallest building in the world
The Sapphire Tower was a proposed luxury hotel and condominium skyscraper in Toronto, Ontario, Canada, to be built by developer Harry Stinson. It was so named because all plans for it had deep blue glass curtain walls. This site had been involved in numerous other proposals, including Stinson's own Downtown Plaza concept, and an earlier proposal that would have incorporated the neighbouring Graphic Arts Building.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).