ofA ceramic tile 20x20 cm was the starting point of the house designed for a family in a city of Chile. The whole building, inclusive of his furniture, has been dimensioned on that measure. With an external elevation of 3,40 mts, the square plan house (11 x 11 mts) was conceived as a glass box, whose faces are all open except one for receive sun radiation and use it for energize the house. The black color was used to hide the house within its context. The field transfer across the house by the transparency of the glass walls.