The main objetive of this exhibition is to propose a joint analysis of thee versions on the subject of the Annunciation painted by El Greco in his mature years: the final work, which was a part of the altarpiece of the Doña María de Aragón College, at present in the Prado Museum, and two smaller replicas of sketches, belonging one to the Bilbao Fine Arts Museum and the other to the Permanent Collection of the Thyssen-Bornemisza Museum. Two other paintings were also included: The Baptism of Jesus and The Adoration of the Shepherds, belonging to the Palazzo Barberini Collection in Rome, which are versions of two larger works belonging to the same altarpiece. The visitors would also observe the results of the scientific study carried out mainly on the occasion of the restoration of the Thyssen-Bornemisza Museum´s Annunciation.