Casa C06 is a minimalist interior located in Madrid, Spain, designed by Lucas y Hernández-Gil. The project can be conceptually defined as a wooden box placed inside a concrete structure. With the contrast between the hardy and rough concrete and the friendly and tactile characteristics of wood. We first worked in revealing the interior structure of the house and then we configured the new arrangement as a big piece of furniture. This is an influence of the original way of construction and the relationship between concrete an its wood formworks.