To me it looks like a clean, entirely new city laid out on a recently colonized (habitable) planet other than earth. It's the only way you'd be able to lay something all out at once like that, and to have roughly the same style of building uniformly throughout the city. That's not necessarily a bad thing, and if that's where Carl's going with it then that's fine. I will say, however, that there is one small problem still: the terrain is far too uniform. There doesn't exist anything like the perfect plane that this particular city is laid out on, so it looks odd. Deform the ground; add some hills and curves (especially to the waterfront, as it's far too linear right now) and I think that the spacing between buildings can be passed off easily.
