Astral Clocktower Key is a Key Item in Bloodborne. It was added with The Old Hunters DLC.
| "Key to the Astral Clocktower at the top of the Grand Cathedral.
The caretaker of the tower's numerous patients, known to them only as Lady Maria, made her home behind the giant star-interpreting clock."
- Opening the Gate to the Astral Clock Tower
- After killing the Living Failures.
- Player note 1