Hi traveller840 -- Welcome to Luxury Travel's forum! If you know Fairmont Hotels, you're clearly not new to luxury travel, though. I have a Life List of the historic Canadian Pacific hotels (now Fairmont) like birders have a Life List of bird species spotted!
I've stayed at a number, but have a few to go. Hard to say which are my favorites, though, since each has its charms. I love the Algonquin, in St. Andrews, New Brunswick, which was the first I stayed in and one I go back to regularly. But tea at the Empress in Victoria, the view from Chateau Lake Louise, the history and setting of Chateau Frontenac in Quebec City -- all incomparable experiences.