The saga told in Sanctum of the Archmage takes place in the world of Kalara. You can learn more about it by visiting Kalara’s page on the worldbuilding site, World Anvil. There you’ll find details of the world including maps, character profiles, timelines of its history, and even story samples from the Sanctum saga.
One of Kalara’s central and key cities is Glorn, home of the reknowned adventuring group, The Heroes of Glorn. Glorn is the easternmost of the free city-states of Landis, and a major trading port which lies at the mouth of the Calihan river. The Calihan flows through Stonegate Pass to the north, the only known passage through the great range of the Nurian and Enduran Mountains.