Otreus (pronounced OH-tree-us) is a city in the Viridian province of Attalea Major, located on the southern shores of the lake whose name it shares. The city is well known for its olive oil, grown in fields around the lake and pressed on the southern outskirts. Much of this oil makes its way towards the kitchens of the elites of the Dominion across Attalea Major and Ertan, where it is widely considered some of the finest one can buy.
Otreus has long been under the influence of the senatorial family House Vatias, who also, as of Y9976*, hold the throne of Viridia.