Vila Vieira de Castro was designed by the architect Alvaro Siza on the 1984, the same period in which the architect was designing the Carlos Ramos's Pavilion at the University of Architecture of Porto.This house is located on the top of a hill near Vila Nova de Famalicao, a rural hamlet of the Portuguese hinterland, and it is perceived by the play of white articulated volumes which cause a spatial concatenation of the interiors.The villa is developed in two levels: at the first floor the sleeping area, although it preserves its cosiness, is open to the rest of the home by the voids which make the space porous and lighted in different way.