The Church of Saint Andrew, with the attached Oratories of Saint Barbara and Saint Silvia, is located close to the Church of San Gregorio Magno al Celio. The monumental complex, with the adjoining archaeological areas, was donated to the Chapter of Saint Mary Major by Pope Leo XII in 1828. The Triclinium is the oldest of the Oratories and is dedicated to Saint Barbara. Its back wall houses a sculpture by Nicolas Cordier, Papa Gregorio Magno benedicente (Pope Gregory the Great in blessing), which was made from a marble sculpture that Michelangelo Buonarroti had left unfinished. Located in the centre is the white marble table upon which Saint Gregory and his mother Saint Silvia provided lunch for 12 poor people daily.
The Church of Saint Andrew was erected on architectural remains that mark the first place of worship established by Saint Gregory the Great. The side walls have two large frescoes by Guido Reni and Domenichino, both depicting various moments in the life of the Saint.
From behind the Church, overlooking the Clivo di Scauro, one can admire the archaeological remains of what the most esteemed scholars and experts in the field recognise as the apsed Hall, with a basilican outline, of the Library of Pope Agapetus I (535-536).
