In college I took classes in parapsychology because it not only fulfilled my sociology requirements, but also because I have always found hauntings/ghosts fascinating. There may very well be some scientific explanation for what we call hauntings. But...no matter what the cause, there are things that remain unexplained that occur in certain locales. For the time being, these things are often called hauntings.
My experiences with a haunted hotel:
My family and I have stayed at the Eden Hall bed and breakfast in Xenia, Ohio on two occasions (I am not sure if it is still open for bookings. It is featured in one of the Haunted Ohio series of books). The first time we stayed was in the Yellow Room (my wife and I). In the middle of the night we heard a very distinct loud scream coming from somewhere in the mansion. The next morning the owners who stay in a wing of the house heard nothing. We were the only guests that night. The owners had to leave that morning and my wife and I were the only ones in the mansion. During breakfast we heard loud knocks on the side door just beyond the kitchen---but there was no none there.
On the second time I stayed at Eden Hall I took my son who was helping me with a magic show I was doing near Xenia (I was doing part-time magician work at the time). We stayed the first night in the infamous Blue Room. In the hallway just outside the room is a picture of Eden Hall taken around 1900 during a fire in the house. The picture stays on the wall now. But on that night when I took my son to see the picture---it was gone, and in its place was a picture of a dog. When I went to the bathroom later on that night, the picture was back where it belonged, and the dog picture was gone. My son, who was around 11 at the time, said he saw lights moving around in the room. The following night we stayed in the Red Room. Around 3 in the morning, we heard a procession of people walking down the hallway just outside our room---almost like a party. I stepped out and there was nothing---just a dimly lit hallway.
Well...as for haunted hotels, this is the only one I have had experience with.
Eden Hall, Xenia, Ohio
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"My journey has just begun."