Avernus cathedral, also known as The Great Cathedral of Avernus, was the focal point of the city of Avernus and the centre of worship for the religion of the inhabitants. Unknown to most, the catacombs beneath the cathedral were home to a different type of worship, that of Hash'ak'gik Cult. The Cathedral was a playable location in Blood Omen: Legacy of Kain and Legacy of Kain: Defiance. The history of the Cathedral is murky at best; there were Ancient Vampire and Hylden ruins on the site and the catacombs were possibly once the site of a Hylden stronghold, as the walls had murals depicting past events from the Hylden point of view.