In the northern regions of China, there are many houses carved into the side of hills. These are generally referred to as Yaodong. Many of these actually date back to the time before Christ, and are continually used to this very day. These provide good temperatures all throughout the year. If ever summer comes, rest assured that you’d feel pretty cozy.
Located in an old mining town in Australia, this earth home makes a whole lot of sense. Considering that the summer heat can get pretty intolerable, it’s actually nice to go underground to regulate body heat. All practicality aside, the dwelling place looks pretty nifty too. You just might want to move here.