This Grade II listed property called Rockmount is on the market for £3.25million.
The property is almost 7,000 square feet and also has a massive garden.
One of the 11 bedrooms in the Gothic Victorian property in Crystal Palace.
The property also features 2 reception rooms, a dining room, sitting room, play room, dressing room, breakfast room, games room, study and wine cellar.
The building also contains a couple of self-contained flats.
Hidden in the loft is a room designed like the inside of a spaceship.