How do you handle ruins of great temples or castles and what

>>54428040
Depends on how delapidated it is. You could have an out of date map to base shit on but need to back track because of collapsed hallways and actively having the PCs break a clear cut path.

Another could be a sole occupant that booby trap direct routes and generally creeps the out by watching from secret locations.

There could be keys hidden around so it turns into metriod, the nerdowells having said keys and having to fight them in their domains