Halls of the West
is a location added by mod The Gray Cowl of Nocturnal
The building has one of two ways in which the Alik'r Desert can be accessed. Dragonborn has to pass through this building to acquire The Gray Cowl in the quest The Call of Gray Cowl of Nocturnal.
Boots of Springheel Jak and Caio's Journal Vol. 5 for quest Memories of Umbranox can be found here.