Gaudí’s conception of the Sagrada Familia was based on the traditions of Gothic and Byzantine cathedrals. His intention was to express Christian belief through the architecture and the beauty of the building and communicate the message of the Evangelists. He achieved a symbiosis between form and Christian iconography, with a personal architecture generated via new but thoroughly logical structures, forms and geometries inspired by nature, with light and colour also playing a central role.
The meaning of the Sagrada Familia is communicated through the form and expressivity of its architecture and the iconography of its sculpture.
The various architectural elements are imbued with hierarchically organised Christian symbolism. Thus, each of its 18 towers has a special significance. In the middle is the tower dedicated to Jesus Christ and around it are four towers representing the Gospels; the books containing the life and teachings of Jesus. The tower above the apse, crowned by a star, represents his mother the Virgin Mary, while the remaining 12 towers represent the 12 Apostles, witnesses to his words and deeds.
From wherever they are seen, once finished, these 18 towers will be an extraordinary sight and provide a sense of elevation to the central tower dedicated to Jesus Christ.