Seperated at birth?

Vatican Museum - Giuseppe Momo, 1932

New York Guggenheim - Frank Lloyd Wright, 1957

My friend Allan was kind enough to give a Flickr Pro account to me. I recently started the process of identifying my best shots for my new Flickr set and recalled that when I was in Rome, I noticed a stark similarity between the circular staircase in the Vatican museum and the New York Guggenheim. There's no point beyond that really, aside from the joy of recognising great architecture in different places. But now that I've started, I recall a few other architectural coincidences I've come across, which I'll try to add in the future.