Honestly, I really do not understand this borderline fetish that Calgary has with twin buildings. And BTW building one shorter than the other or juxtaposing the one perpendicular to its neighbor doesn't make it any less twin-like (nice try, though..not.

) ; so I'm kinda failing to see what any architect who seems bent on creating either/or would be trying to accomplish.
Calgary seems to be light years ahead of almost every other "big-skylined" city worldwide in this regard. IMO they should've kept this beauty a single structure and stop wasting prime real estate erecting duplicates. It generates the perception that architects up there have locked themselves inside the very same boxes that many of us here would like to see them think beyond.