Everyone said the school library was haunted

I used to be in charge  of shutting up the old school library.  Everyone said it was haunted, and as I shut off the lights, one by one, dark spirits seemed to appear in the shadows.   I remember how the fear seemed to rise up, from my feet, like a cold mist.  Have you ever been somewhere terrifying?  Have you actually ever seen a ghost?  Could you describe what happened, and exactly how it felt?

Tell me about it in the comments below or via my contact page if you want to send a picture.