In the future, interplanetary travel will become accessible. Humans will colonise Mars and build new cities and villages after the planet is terraformed.

“Starport” will support frequent travel with a docking port for crafts on the top; space elevators will bring passengers down to the ground base research facility and further to the subterranean habitats with living units. The tower structure with a self-sustaining ecosystem can be multiplied and interconnected as a network. 3D printing robots, nuclear fusion, and space farming are key technologies that will make colonisation possible.