Astyrin is one of the five major cities within the Icarian Free States. Astyrin is the northernmost of the Free States.

Astyrin is the only Free State that has not been conqured by Aethon. The city has been able to halt the expansion of Aethon due to it's financial and military support from Tyrium. A large garrison of Tyrian mercenaries reside within the city. Many refugees from the other Free States have fled to Astyrin as well, further bolstering her armies.