Constructed in the lower levels of Castle Sturmvoraus, it housed the Summoning Engine rebuilt by Vrin and Prince Aaronev VI after Loremistress Milvistle arranged for the original device to be destroyed.
In addition to the Engine and various pieces of scientific apparatus, the Chapel was decorated with feminine statuary and paintings and the Geisterdamen Goddess symbol. Whether regular rituals were performed in the Chapel as well is unknown.
The Chapel could be easily accessed by Sturmhalten Deepdown. The base was effectively destroyed on evacuation, with tunnels collapsed as the Geisterdamen retreated, but the original plans to  were trumped by Prince Tarvek for track-covering.to the in the