Needing Suggestions for Upcoming Sci-Fi City

This is currently my upcoming huge sci-fi capital city for a group:



It’s big, beautiful, and all, but it sliding towards a modern-type of city. I want it to stand out and make it unique from all the other cities people had made. I’m also having some trouble thinking of what would be the outside of this main area, and what those curved roads would lead to. Let me know of your best suggestions, and I will use them. Thanks!

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