Mars

A thriving well-developed city, that looks suspiciously like any other regular city on Earth, domed in a harsh, unforgiving Martian atmosphere. Some refused this deceitful way of life and created smaller camps in the harsh lands, farming with fairly advanced technology. Some others refused to colonise another planet and built a floating spaceship in space, rotating around Earth like the Moon, helping refugees when necessary. The poorest of the poor, having not much choice, live out their depressing lives on the dying blue planet.