Starship Design Project:Super-Station

From VengefulWiki

Super Stations are super-massive constructs ranging from 50 kilometers to 500 kilometers in diameter.

The constructs are so large that they have their own significant gravity well and often are stuck in whichever locale they are constructed within. Self sufficient these constructs are major expenditures in effort and time in the making and are literally worlds unto themselves supporting hundreds of millions of individuals or more. Although highly unlikely, given adequate means such constructs can be moved across interstellar distances, but in most cases this is rare and not very beneficial or is moving such items on interplanetary scales either, even it is much more feasible.