Alonsus Chapel is a chapel in the Stratholme undead side where the first paladins were created just prior to the Second War. It was presumably named after Alonsus Faol, Uther's mentor and the leader of the Church of Light.
Despite its dingy appearance, it survived both Prince Arthas' purge and the Scourge invasion relatively intact. Before the Cataclysm, the chapel was completely surrounded by zombies and skeletons, and Magistrate Barthilas also stood vigil outside — that was, until someone opened the inner gate of the service entrance. An eternal flame burned in this chapel at least long enough to keep the Scourge from overrunning it (and, apparently, to prevent the fires of Stratholme from consuming it) and to prevent its single occupant — the paladin Aurius — from being transformed into a death knight.
In order to complete their final trial to obtain the rank of Master, Blood Knights of Silvermoon City had to enter into Stratholme and extinguish the eternal flame inside of the building. The chapel would then go up in flames and the Blood Knights and their group would have to defeat Aurius and the spirits of five Knights of the Silver Hand to emerge victoriously.
- Although the eternal flame is supposed to keep the Scourge out, the mobs of Stratholme have no trouble following you inside the chapel.
- According to Of Blood and Honor, the paladin-induction ceremony for Tirion Fordring was held in the Cathedral of Light. It was likely meant to refer to Alonsus Chapel as the cathedral in Stormwind City was at the beginning of the Second War ruined / in control of the orcs.
- In the RPG books there is a religious building within Stratholme called Temple of Light.
Alonsus Chapel ablaze after the eternal flame was doused by the Blood Knights.
Alonsus Chapel in the Culling of Stratholme instance.
Alonsus Chapel in Warcraft III: Reforged.