Secret Door (Boxed)

Do you want to make one room of your build secret? well this is the ideal answer to your wish, you may re-texture to suit your design and then all you have to do is insert it in the space you leave, when it is a picture (which the texture could be changed to a wall, window or anything else you want) you will find people will not be able to walk through as it is solid, but just click on it and it will change to open curtains and you are able to walk through like there is nothing there, a really superb entrance to a hidden chamber or room that only you know about.