Centralia is an island that is part of the Rhine Archipelago. This island is one of the most significant powers on Jaern, with many of the island's cities having their own governments but all bowing down to the rule of Centralia City. The predominate language is Ferric, although most business people do speak Paroli. People that don't speak Ferric though are looked down on and business people that want to get ahead will always do business in Ferric.

Centralia City is the largest city on Centralia Island and in the Rhine. Many consider it the capital city because it shares its namesake with the island itself. The city is under the control of the various Lords. The city is know for being the home of many wealthy business owners and generally is on the bleeding edge when it comes to art and fashion. Many believe their is but a single law in the city, which is to keep the city clean of filth. While it rarely happens, death sentences have been handed down for littering.

Little Karfelon is a trade town on the south side of the road between Centralia City and Pregada. It was originally inhabited by refugees from the destruction of Karfelon. Paroli is the main language since it was the primary language of Karfelon.

Ocean's Ridge is a resort city designed specifically with entertainment and relaxation in mind.

Prall is the worker city on the island of Centralia. Prall is in direct contrast to Centralia Prime. It is dirty and dangerous.

Pregada is a small city that is mostly inhabited by artisans, shop-keepers and the household help of Centralia.

• The Guild of Wizards: Also known as the Mages' Guild, this organization of spellcasters manages magical affairs in all Centralia's dominion, notably the Alpha Site, which contains a multitude of portals to other worlds.

• The Festival of the Freeze - This festival takes place during the first day that Centralia becomes ice locked and its citizens are able to walk to Is'Damor. This usually occurs during Murh or Napen.

• Karneval of Remembrance - Held on Napen 18-20 and commemorates the death of Master Telain and the completion of his most famous work: Is'Damor.

• Winter Festival of Games - On Obern 16th the people come together in a celebration of winter. There is always lots of sledding and skating. The annual Skimmer races are held during this festival.