King Alfonso II founded the Monastery of San Paio de Antealtares in the year 830. It fell into decay at the end of the 13th century, and in ruins, the Catholic Monarchs eliminated it and included it into S. Martín Pinario. In 1495, Gómez de Marzoa´s efforts to set up a college for poor students led to the monastery becoming Compostela´s first school and the origin of Galicia´s Renaissance University. The Order of benedictine nuns occupied it as of 1499.
The present-day building, in baroque style, appeared between 1599 and 1744. Fernández Lechuga the closing wall of La Quintana as a large, undecorated canavas, gicving the sensation of perfection and grandeur; Velasco Agüero built the other walls of the cloister and doorway facade, with a monumental doorwayframed by four giant order Doric columns; Fernando de Casas y Novoa extended the building to the Carros Gateway, finished by Lucas Ferro Caaveiro and known as 'Puerta de la Borriquita' (the Donkey Gateway), thanks to the relief image of the Flight to Egypt (Francisco de Lens, circa. 1750). Church (Friar Gabriel de las Casas, 1703-07) in cut-stone granite and tiled, two-sided roof. Greek cross ground plan extended at the western end to accommodate the choir. Simple, monumental facade with the figure of St. Pelayo Martyr. Interior covered with a dome over pendentives. Main retable by Castro Canseco.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.