Atlantis (Terra)

The 23rd century saw a continued rise in population as life-extending treatments began to spread and many developing nations began catching up with the developed world. Many saw the wide-open frontier of space as a solution to the rising problem of overpopulation, as the completion of the Singapore Space Elevator was thought by many to make colonisation cheap enough to considerably slow planetside population growth.

Unfortunatly, this assumption proved wrong. While transport into orbit had indeed become very cheap, constructing off-world habitats and colonies capable of supporting humans at reasonable comfort levels was still very expensive, emigration did increase considerably, but not enough to provide balance for population growth. In response to this, the UN, which had become considerably more active in recent decades, began an ambitious project to utilise the techniques learned in off-world colony construction in the construction of a large, self-sufficient aquatic city in the Atlantic Ocean.

The city was appropriately named 'Atlantis', in reference to an old Terran legend which described a vast and ancient city which long ago sunk beneath the waves, as well as the ocean it was sited in. The name is fitting in more way than one, by mass over half of the city lies well below the surface.

Fact List

Settlement Name: Atlantis City
Location: Central Atlantic Ocean, Terra, Sol
Founded: 2258
Founding faction: UN
Current Allegiance: Solar Union Sol division
Peak population: 60 million
Current population: 60 million


Atlantis was the first major city built on liquid water ocean on a habitable world, and involved pioneering efforts in several fields, including large scale hydrophonics, large scale floating structures, underwater habitation and tidal wave defenses.


Construction officially began in 2258, with proposals for similar projects going back several decades, and planning work having started a few years earlier. The project was riddled with problems from the beginning, with delays, technical difficulties, misunderstandings, ambigous contracts and other challenges leading to repeated delays and changes in the plans.