Tethra is bordered by water on all four sides.  To the north lies the Nessan Sea, to the east the Sea of Telamon, to the south the Arion Ocean and to the west stretches the Tiamut River.

In the centre of the country is the Ganesa Plateau, a striking flat rock plan upon which wander the famous Colossi.  The Stone Forest lies to the south of this plateau and is a popular place for bandits to attack travellers on the road from Cessair to Brigantia.

Brigantia is the country’s easternmost city, but it is more commonly known as Murdertown.  It is a den of iniquity, where thieves, assassins, cut-throats and pirates swarm like buzzbeetles over flowerfall.  Ironically it is also home to the Hulks, massive iron prison barges where criminals are contained.  It is also home to the Machineworks, Tethra's main foundry where much metal plating is made for Tethrans to adorn themselves with.  This dirty factory at the southern edge of town can be seen from miles away, as great plumes of black smoke rise out of its chimneys.

Corra to the south is an agricultural region and farms here have stayed the same as they have for centuries.  Corra is a beautiful city overlooking the ocean.  It is also an important port, connecting Tethra to Acoran to the west, Helyas to the east and Susano and Kompira to the south-east.