Ancestral Plane

The Ancestral Plane is the name given to a dimension in the afterlife where the deceased Warren Witches gather in times of need. The plane greatly resembles that of the Halliwell Manor.

About
The Ancestral Plane is a dimension in the afterlife or the beyond where The Halliwell / Warren Line of witches gather in times of need. The plane resemblances the Halliwell Manor because is commonplace to all of them.

While the afterlife's appearance can be different from everyone, the Ancestral Plane is a place related to them all.