Rainwater recovery and groundwater pollution have long been central themes of the architectural debate: today Architects and thinkers are focusing their research on new housing models, inspired by the responsible use of environmental resources. By contrast, Water House is a house prototype designed as a response to apocalyptic scenarios: it originates from the hypothetical failure of any landscape preservation strategy and of any conscious use of natural resources. In this future catastrophic scenario humanity will be forced to totally re-think the housing typology, and dwellings will become large containers of the most precious natural resource: water! In the Water House prototype rooms will be tanks to collect water, and the walls will be re-interpreted as living spaces: walls, traditionally used as partitions or structure, here become interstitial spaces containing all living systems. The installation proposal for Bologna Water Design 2014 is a model of this housing prototype: the wall-space becomes a path winding through the water pools. The water's perception will be simulated by light projection on broken glasses put along the edges, so that the visitor along the red path will experience a walk through an environment surrounded by water.