The Bastion of Sanctity is a special place for the Brotherhood of Purity. A rich guy (obviously Lowell Percival himself) was rumored to have brought the ruins of an ancient European castle and built this in a forested area, situated at Long. 122°47'11" Lat. 41°28'6". It was dominated by a large main area with a fireplace, surrounded by a corridor.
It is where Percival was seen giving orders to Chameleon.