The Nightmare Church is a small church that appears to serve as a checkpoint to the boss fight that lies ahead of the area.
- There is a bloodied undead human that is beating his hand on the large gate just outside the church. This being drops 5 Blood Vials and will always respawn. A good method to farm Vials.
- The Butcher Set is deep into the path where the axe-wielding Nightmare Executioner comes out.
- Players can summon 2 out 3 NPCs in the area. Henriet, Valtr or the Younger Madaras Twin.
- It appears to be the Nightmare's version of the church that leads down into Old Yharnam, in the Cathedral Ward.