Nice pics. I'm still amazed that Calgary did something Toronto never could, and closed not one, but two major downtown streets to cars. Stephen avenue is really nice, but how's the retail? Despite having nearly everything else, Calgary is still missing something of a Ste. Catherine, Robson or Yonge street.
the retail is there, but its no Yonge street. its more the destination for good restaurants and pubs. they used to have a McNally-Robinson Book store that really was the best bookstore in the city. While Stephen Ave may not be a Yonge type street, it really is the most vibrant street in the core. I'll do a photo tour of Stephen Ave. sometime soon...
From what I've seen, it's usually minor streets that make the best pedestrian-only areas, not major streets. There's probably a dozen or more side streets in downtown Toronto that would be great closed off to traffic, but I wouldn't want to see it happen on any of the main streets.
Anyway, nice pics. I've only been to Calgary once and I didn't have much time to explore the city.