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Brave ghost-hunters can visit Shepton Mallet Prison in Somerset was home to a number of notorious criminals in the past, including the Kray Twins and is said to be the most haunted prison in Britain.
I'm not sure how they substantiate the claims of it being 'most haunted prison in the UK', but let's go with it, because it looks creepy AF.
HMP Shepton Mallet was the oldest operating prison in the UK, before it was closed in 2013, and held a number of executions before capital punishment was outlawed.
If none of that has put you off, then company Bump in the Night Paranormal UK offers the chance to spend a night there.
According to the company, the ghosts of HMP Shepton Mallet are 'vast and varied', with the site adding: "With links back to the early 17th Century and with so many thousands of unnamed victims that lie within the grounds it is not a place where you would ever want to be alone.
"In the 1950's Shepton Mallet became home to Reggie and Ronnie Kray the notorious East End gangsters and it seems that their crimes did not just consist to areas outside of the prison.
"Cell doors are regularly heard opening and slamming shut for no reason. Footsteps are heard on the walkways and along the corridors.
"Ghostly figures are also seen moving around the prison in the dead of night."
Speaking to Bristol Live one of the team from Bump in the Night said: "I've seen and heard all sorts including shadows when nobody is around, doors slamming shut and footsteps only to see nobody there.
"When we were in the prison once my colleague leapt up from his seat and ran across the room. I asked what happened and he said he heard a loud growling sound in his ear, but we were the only two people in there."
You can choose if you want to stay in the prison until 2am or 6.30am - depending on how brave you're feeling, I guess.
Of course, if you're not feeling particularly brave at all, you can visit the creepy prison during the day, but where's the fun in that, eh?
If you want to find out more, or book your place, you can do so here.
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