In the outer part of the wheel, are placed the figures of God the Father to the left and the Holy Spirit to the right bearing the rungs of the cross. In the bottom of the cross, the figures of the Virgin Mary and John the Evangelist complete the scene. The pelican located at top of the cross gives the core set an extraordinary symbolic value as an allegory to the Eucharistic sacrifice, because the bird feeds its birdies of its own blood. Royal Sepulchers The royal sepulchers set were designed by artist Gil de Siloé commissioned by Queen Isabella I of Castile. On the one hand is the Sepulchers of John II of Castile and Isabella of Portugal, placed in the nave's center, eight-pointed star shaped. And in the Gospel side of the church is located the Sepulcher of infante Alfonso of Castile. Both sepulchers were made in alabaster and are late-Gothic sculpture's jewels. Sepulchers of the King John II of Castile and Queen consort Isabella of Portugal The sepulcher of John II of Castile and of his second wife Isabella of Portugal is made in alabaster and is in Gothic style. It has octagonal eight-pointed star shaped, formed by the superposition of a square and a diamond. Gallery References External links Cartuja de Miraflores Roman Catholic churches in Burgos Monasteries in Castile and León Isabelline architecture Historical Patrimony of Spain Carthusian monasteries in Spain Religious buildings and structures completed in 1442 Tourist attractions in Burgos Burial sites of the House of Trastámara