Question about the Imperial City

Hello! I've been following the project for a long time, and every update brings me so much joy! You're all an amazing team!

I'd like to ask two questions. Judging by old videos and screenshots, the Imperial City was already partially built (maybe just the exteriors?) - are you just finishing what was already done, or did you have to completely redesign the city?

And secondly, a couple of years ago, a beautiful building was posted with a guessing gameplay challenge (I really love round buildings with domes, especially glass ones). Can anyone tell me what exactly it is and what district it's in? (Unless, of course, it's been removed.)
https://www.reddit.com/r/skyblivion/comments/1bc4l77/mystery_showcase_skyblivion_update/