Over history, there are so many places that have reported ghosts living in buildings or the places being haunted. You will find people who have machines that go to these places and try and record the activity in them to prove they are haunted. A ghost is the spirit of the person who is not at rest and they stay in one place or another because they are trapped there. As for me I have never seen an actual ghost or been to a place that is haunted. I do believe they can exist and it is possible that they are out there. Nobody really knows what happens to us after we die and it is possible that are spirts can remain here on earth for eternity.