Anyone got any alternative thoughts on the Norman Foster question? I have found that he's built one major building and that his Yurt could be considered to be at the planning stage as it's not built yet, but I'm still not sure that one is the answer they want.
Having said that I can't think what other answer they might be looking for!
I'm puzzled by this question too. Think I'm going to opt for one (the giant tent that is being planned) since the other major building (pyramid/Palace of Peace) is now completed.