Wikipedia
Estalia is a fictional realm in the Warhammer World setting and appears in games from Games Workshop.
Estalia is the Warhammer equivalent of the Iberian peninsula and Italian peninsula. The region's kingdoms, cultures and political situation are modelled after medieval Spain and Italy. In fact the name "Estalia" is a mix-up of the names EspaƱa (Spain) and Italia (Italy). Estalia is located in the Southern Old World, a peninsula to the south-west of Bretonnia bordered by the Irrana and Abasko Mountains to the east, the Great Western Ocean to the north and west and the Southern Sea to the south. Far from the front lines in the wars against Chaos, Estalia has remained politically fractured, with rival kingdoms vying for power and influence between each other and against the neighboring city-states of Tilea, such as Tobaro, which lies across the Abaskos from Bilbali.
Estalia is dominated by two powerful port cities, Bilbali and Magritta. The rivalry between the two - and between each and their Tilean neighbors, for that matter - has endured for centuries. Estalia bore the brunt of Sultan Jaffar's invasion from Araby, which was eventually driven from the peninsula by a combined force including knights from Bretonnia and The Empire. Estalians take great offense at being referred to as Tileans, or at being addressed in the Tilean language by accident. The peninsula is renowned for its Diestros, skilled duelists who ply their skills across the Old World.
While the old Black Library novel Zaragoz detailed the eponymous city in the peninsula, relatively little of Estalia has been published in recent years. It has most prominently included in the release of the Dogs of War army book in the 5th edition of Warhammer, as well as in the BL novel Fell Cargo.