|First Seen:||November 2017|
Located north of the lake. It used to serve as the church for the Xavier family, and in 2017 it was claimed as the new base of operations for eXcalibur, and renovated to fit the team's needs. It has several lab areas, offices, and a library in the basement.
In 2021, following the collapse of Avalon and Topaz' being trapped between dimensions, the resulting Einstein–Rosen bridge in the basement has become part of the team's mission statement, monitoring it and intervening when necessary to prevent the destruction of this and other dimensions.
Introduced by: Cai