Redpath Sugar has been around since 1854. Originally started in Montreal, Quebec, but later merged with Canada Sugar Refining Company in the 1930s. In 1958, Redpath Sugar opened the current refinery in Toronto's Waterfront, where it is still operating today. Sadly, like many Canadian companies with heritage, the Redpath is now owned by an American company.
The Redpath refinery has a museum inside the plant. I haven't been to it, yet. Perhaps it's worth a visit.
Redpath, taken from 17th floor -- Canon 5D Mark II & EF 50mm f1.2L