Why was the chapel abandoned? What is in the catacombs below? That's for you to decide DM! Please enjoy this map, which started as me playing around with the new Cathedral assets. I didn't make a full cathedral, instead focusing on something smaller.

This map has three levels:
1. The Chapel, which includes places where the monks and their Prior eat and sleep.
2. The second floor, including a loft for the choir (although you technically wouldn't see this in most monasteries), washroom, more rooms, and study.
3. The catacombs, where dead monks are buried. It includes a hidden chamber.