The proposed spatial concept resembles a giant drop of water falling on a topographical slit. It is situated on the top of a small hill, along the shore of Teshima, a small island near the city of Takamatsu. It formed as a very light concrete sheet only 15 cm thickness which is pierced at two points to establish a visual relationship between the undulating controlled inner and outer space leafy. For those elliptical holes sneaks perception of the surrounding vegetation and the sky allowing free movement of water and snow with the wind in the yards well formed.