Why do I dream of the same place over and over?

Its a mansion i have never seen before. and its strange because i have had seperate dreams, with days or weeks between the dreams, of me being in that mansion and different events occuring. In different parts of the house.

One dream i was kidnapped and was trying to escape, but their were a lotta men watching me most the time. So i managed to get away and get outside and thats when I first saw the mansion. Then I feel in a pile of leaves and a man came out with a carpet and beat me then set the leafs on fire. then i woke up.

next dream i was in the mansion with a family i didnt know. they were all twisted freaks and they acted like nothing was going on. Then I realized what was happening and i attacked the family. i stabbed and sliced and chopped but they didnt die. They just stood there all bloodly and cut up and would still talk to me. I befriended the son and daughter. but then i woke up.

Then i was in there with a my best friends family, but it was a different layout then their normal house. Once again i was in a state of shock because we had gotten in major trouble and they were after us. This is the point where i ran threw the mansion and appeared in the hallway and bedroom i was in, in my first dream. it was the same mansion cuz then i ran outside to check.

Its like a personal hell in my mind and i dont understand why i dream of this MANSION i have never seen and these horriable things happen to me and the people around me. WHAT DOES IT ALL MEAN?!?! It drives me insane when i try to think about it. I just dont understand.