This apartment located in Hong Kong, China may be one of the Greenest apartments your eyes may ever see. In Hong Kong it is a principle to use make every space functional, which should be practiced more often here in the US also.
Gary Chang has taken a two bedroom apartment which equals to 330 square feet and turned it into multiple rooms. The bathtub is behind a closet which is behind a bookcase, everything can be moved, slid, pushed, pulled, etc. There is even a screening room for goodness sake! I would take that apartment any day for what I have now, wouldn’t you?