An ingenious architect called Gary Chang has created this amazing apartment which allows 24 different room configurations in just 330 sq. ft of space! Every inch of his apartment is utilised in the most efficient way possible...his bookcase/cd shelf conceals a linen cupboard. However, all this space-saving doesn't mean Mr. Chang need skimp on luxuries; when the bath is not in use it doubles as a spare bed! Check out the video for 4 minutes of astonishment.