I totally just did a quest where I was given a ghoul mask as the reward 
.
Then I went to this scary building in the southwest part of the map that was full of ghouls and a creepy feel/story behind it.
Totally digging the mask though. I walked through the entire building not having to kill one ghoul… I must admit, their sounds along with the creepy music made me feel a tad tense, even with the mask on. There is actually a pretty neat item if you go all the way through the building .