The Importance of the Garderobe
The Medieval Project Manager

Garderobes are probably the most overlooked feature of any castle and yet their importance is undeniable. To see them you may have to crane your neck a bit as they are often found protruding from the high walls and ramparts of castles on corbels and are generally mistaken as for portals for archers. Nay, not archers, these holes expel not arrows but poop.