Birmingham?

So we are off to Birmingham next weekend and this time I would actually like to see something rather than simply go to the convention.
Last time, I asked the shuttle driver what he would suggest, and he couldn't give me anything that he felt I should, as a tourist, visit. Which I thought was very sad. So we had a great meal at a gastropub recommended by a friend.
This time however, I would really like to see something cultural or architectural: anyone have any ideas?