The Articulate Plane
Horn is the center of Kauthian government in the Northern Province – host to both Baron Revitus and Duke Andor. It is well-fortified and prosperous, due to its proximity to the Navanian border. Its population of 30,000 contains an above-average number of elves.
Horn contains the largest known site of Pelor worship: the Temple-Hospital of Almor. Its blindingly white towers are visible for miles around.