Greater Arthia is a large empire covering most of the Eastern and Western continents of Easorhn.
The map itself can be viewed here.
Arthia is the capitol city of Greater Arthia and the seat of power for the government. It is centrally located on the western continent to ensure that edicts from the crown reach every corner of Greater Arthia at around the same time. The original kingdom of Arthia was the area around the city which has all but fallen into disuse over the centuries.
The central channel bisecting the empire is known simply as the Bore. Due to this geopgraphy, Greater Arthia has a thriving marine economy. A large frontier extends to the East from the settled realms of Greater Arthia; Kargonia is located centrally in this frontier zone.
There are two other metropli in the empire, Kargonia in the northeast frontier and the Nyissan port of Ischia to the west across the Bore. There is a large ciy, though not a metropolis, named Manteflaro (this will change) located on the southeastern shore at the mouth of the river Nespo.