The Fortified Doma of Autochthonos was a residence in the Porimos Ring, within the simulation of Atlantis. Found at the northeastern side of the region, this doma was home to Isu Autochthonos, son of Poseidon. It was protected by military personnel.
The Doma consisted of one main building with a small port in front of it. A staircase at the back of the residence connected the the upper levels. A small garden was situated on top of the roof at the southern and northern sides, whilst golden statues adorned the building and surrounding area.