Aeterna is the capital city of Aethon.
The city has a population of 700,000 inhabitants, making the largest city on the continent.
Geographically, the city is located between the Litna Mountains and Lake Ethros.
The city is based upon a foundation of five concentric rings, with the Tithaarn Temple at the center. The districts around the temple are the most affluent, and situated upon a well-ordered grid line, while the outlying districts are more impoverished and less organized.
Fresh water is brought into the city via aqueducts, which descend from alpine lakes in the Litna Mts.