I love this page. I love early Turkish Republican architecture and Ankara, of course, has a lot of it. Few people seem to appreciate it it, but this is one of the reasons why I visitied Ankara. I didn't have enough time to see it all, though. I particularly love the Opera House, the Sumer Bank building, the train station, and the brown building identified as o21 and 023 above. Do you have more information on the buildings?