(population: 48,000) Rastios is the capitol and largest city of Serathyr. Located on the Pirate Coast, the city is one of the busiest seaports on Corwyn.

This large seaport is second in size and wealth of sea-trade only to the Orellian seaport of Ordana. Rastios was once the greatest seaport of Ralas and the busiest in the world, but it is now in decline because of competition from Natharos, the island of Greymeet, and the busy Rennsfari ports to the south.

Despite the competition, all manner of human goods from Westvale Island, elvish goods from the Melinar Forest, and even exotic Eloysian goods from Avokhar still make their way through the vast markets of Rastios. The city is located at the southern peninsula of Serathyr at the end of the Olde Peninsula Road.

Rastios is one of the most famous seaports on Oris; serving hundreds of merchant vessels from the cities of: Alarë, Elsareth, Freeport, Kingsport, Natharos, Pikes Ferry, Sathay, Sasserine, the Seven Cities of Brass, Shard, Tymor, and Wyn Falas.

The seaport of Rastios is currently governed by Duke Vharan Sternhelm.