<P> The arch of the right door represents the Last Judgment . The double archivolt is divided into two equal parts by two heads . Some authors identify these heads with the figures of archangel Michael and Christ . For others, they are Christ - Judge and an angel or may indicate God the Father and God the Son . To the right of these heads, Hell is represented with figures of monsters (demons) that drag and torture the souls of the damned . On the left, the Heaven with the elect, with figures of angels with children symbolizing the saved souls . </P> <P> The arch of the left door depicts scenes from the Old Testament, with the righteous await the arrival of the Savior . In the center of the first archivolt is God the Creator who blesses the pilgrim and holding the Book of Eternal Truth, to his right is Adam (naked), Abraham (with the index raised) and Jacob . With them are two figures that could be Noah (new father of humanity to save the Flood) and Esau or Isaac and Judah . To the left of God it see Eve, Moses, Aaron, King David and Solomon . In the second archivolt, the top, ten small figures representing the twelve tribes of Israel . </P> <P> The Obradoiro square in front of the façade alludes to the workshop (obradoiro, in Galician) of stonemasons who worked on the square during the construction of the cathedral . In order to protect the Pórtico da Gloria from deterioration caused by weather, this façade and towers have had several reforms since the 16th century . In the 18th century it was decided to build the current Baroque façade, designed by Fernando de Casas Novoa . It has large glazed windows that illuminate the ancient Romanesque façade and is located between the towers of the Bells and of the Ratchet . In the middle of the central body is St. James and one level below his two disciples Athanasius and Theodore, all dressed as pilgrims . In between, the urn (representing the found tomb) and the star (representing the lights he saw the Hermit Pelagius) between angels and clouds . The tower on the right depicts Mary Salome, mother of St. James, and the tower on the left depicts his father Zebedee . The balustrade on the left side depicts St. Susanna and St. John and the one on the right depicts St. Barbara and James the Less . </P> <P> A stair allows reaching the entrance of the façade . The stair was made in the 17th century by Ginés Martínez and it is of Renaissance style inspired by Giacomo Vignola of Palazzo Farnese . It is diamond - shaped with two ramps that surround the entrance to the old 12th century Romanesque crypt of the Master Mateo, popularly called the "Old Cathedral". </P>

Who built the cathedral of santiago de compostela