Kangaroo Valley House is on those retreat houses which are designed to fullfil their own needs. Located in Australian outback and designed by Alexander Michael for himself, the house is separated for two parts, one with the main living area, the other with two bedrooms. The Living area is basically a simple rectangular space with a polished concrete floor, eighty percent enclosed by retractable glass walls, and single-span composite timber beams supporting the sub-roof ceiling. The roof of the house is designed to partly cover twenty-seven meter long reflection pond and a terrace to create great outdoor places to relax. The region where the weekend retreat is located is sunny so the roof also features twenty panels of photo-voltaic cells to collect solar energy.