A room for prisoners to fulfill their Spirituality need.
The Spiritual Guidance program takes place here, and requires a pew for every prisoner, and a maximum of 20 prisoners can attend the program. It runs for two hours. A Spiritual Leader will arrive at your prison and will add a Calm status effect to your prisoners. The status effect can also pass on to other prisoners.
Note that even though pews take up 4 spaces, they also allow 4 prisoners to sit: thus the difference between a pray mat and a pew is negligible.
Added in Alpha 29