Technically not a starship, rather a city...
After watching the new Dune movie on DVD, I decided to create a sci-fi city map, inspired by Arrakeen, for a non-skyscraper urban area. Appearing as various mastaba shaped short structures only a few levels high, but after getting the bulk I realized, this city is more like a super colossal starship, unmoving and inset into the ground. The top level are essentially rooftops peaking through a contiguous roof hull, with floors dropping beneath the ground 2 to 10 levels down. For simplicity, and modularity I created squares of structure, so they could be easily fitted together into a custom city - prefab.
First I created a manufacturing module, half the width of the other modules with pits dropping down. Next I created the habitat/down town block, which is the downtown shopping area with a glassed roof. Then I created the residential block with a fortress for city leadership, and a temple, with other structures surrounding on a varying level hull. I then created the starport, with airfield sitting lower than the ground level on other blocks. Finally I created a large hydroponic dome as the main source of food. I plan to do top downs to show the transit tracks and corridors and some of the structural interiors. Also posting closeup renderings of the residential, fortress and manufacturing blocks. Enjoy!