There's a forest in Minnesota that's literally called a haunted forest. It's in the name. It's just a little north of the Twin Cities and you can go explore it for yourself.
I know this is kind of morbid but I saw a home go on the market recently in which a heinous murder occurred. It got me wondering how realtors go about telling prospective buyers that the house they're looking at purchasing has a bit of a "history."
"As soon as I got comfortable in bed, I started hearing phantom cries from what seemed like two small children calling out 'mom, mommy' repeatedly like they were looking for me"