Earth United Nations Capital

Hello everyone,
The war between the E.U.N. (Earth United Nations) and the aliens has been going on for more than a century and brought humanity on the brink of extinction. While wars ravage the Earth, E.U.N has sent people to explore and settle colonies on other planets.
Here is a concept of the E.U.N. capital city on a far-away planet.
Thanks for viewing. Stay tuned for more concepts.
Cheers!
_Ken