Well, considering Old Town is the seat of the Citadel, filled with maesters, alchemists, astrologers and other academics, it is not inconceivable that they would have constructed one of the finest mechanical clockworks in all the Seven Kingdoms and placed it in a large tower on campus in order to measure the movement of the stars and generally tell time. And I'm not saying the clocktower should look like a large neo-gothic victorian era erect dong but... it could be cool. anyway, very off topicAnd I'm quite content with that
I'll be petitioning to build something like Big Ben in Oldtown! It would look really awesome.