Pandora's Vault is a prison that can hold a lot of Prisoners but for now, it only holds one prisoner, Dream. he is said to stay in the prison forever. you are allowed to visit but you may have to get through Sam the Guard or what they call. The Warden. You have to go through agreements and sign books in order to just visit Dream. Be care full of Dream. Don't fall for his traps / manipulations. And keep in mind Careful when the Prison goes on Lock down and your trapped with Dream.