Abstract
This study investigates and analyzes Catholic cultural traits in Gaudi's architectural designs on the assumption that the cultural identity of Spain has been built heavily on Catholic cultural tradition. Through examining thoroughly six residential buildings Gaudi designed, Catholic cultural traits were found in their interior ornaments, space formation, and expression of form. This study shows, first, that by making good use of interior ornaments, Gaudi sought to Catholic cultural uniformity among buildings that have different cultural characteristics. Second, with regard to space formation, he tended to build a chapel or an oratory inside structures which encouraged residents to worship in their home. Also, as for expression of form, his designs, expressing Catholic cultural features in various ways, succeeded to form visual uniformity among buildings and structures with a variety of styles. Lastly, by using properly Catholic cultural elements explained above and making those traits easily recognized even from a long distance, his architectural works represent very well the importance of Catholic culture as a foundation of Spain culture.