This house is a little secret invisible if we do not focus, because this house has a specially setup to fool the eyes of others. This is a tea house buried in a backyard overgrown with weeds that are natural and green. Located in the historic city of Japan Hokkaido and designed by Jun Igarashi, Two bunker-like concrete building sits entrenched, surrounded by concrete walls, creating a secluded underground shelter to retreat and relax Slim entrance stairs leading down, while allowing 360-degree air gap and light to pass freely. And the top of the house there is a wide sheet of the table is useful to protect the dugout if there is rain and snow, and also can be used for the coffee table during good weather and no rain.