Our tour guide told us things off record after we took the historical tour. He said he's seen and heard several things and the he used to be a skeptic, but now he's a believer. Things like doors slamming shut at random, voices, children screaming, random bursts of wind, and etc. I haven't heard anything about the haunted house or the overnight stays but I've heard of several storries of people having paranormal activity.
I went there and someone choked me
The skeptic in me had to ask the same question, and a woman who works there recalled how she was in the middle of a tour when scratches and bleeding appeared on her face and neck. Needless to say the people in her tour group took pics and they were horrified by the sight. Whatch out for what you ask for because it may be way more that you wanted.
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