San Miguel de Escalada is located 10 km from the Way of St. James pilgrimage route to Santiago de Compostela. The building is an example of Mozarabic art and architecture or Repoblación art and architecture.
An inscription that has disappeared but was published by Father Risco in 1786 gave information about the church's consecration in 951 by Bishop Genadio of Astorga, around the time of the founding of the Kingdom of León. It was constructed on a site dedicated to Saint Michael, probably a Visigothic church.
The monastery church's nave has three aisles separated by columns and large horseshoe arches, with their apses and a crossing, which is not covered by a cimborio or central tower. The choir is separated from the principal nave by three horseshoe arches sometimes called an iconostasis).
Despite the floor plan, the building appears from the exterior as a rectangular block. All arches take down in marble shafts and Corinthian steeples proceeding from other Visigothic or Roman constructions (as it may be appreciated in a cyma carved as from a gravestone, perhaps from the nearby Roman city of Lancia).
The building has wood panels, which are decorated with paintings from the 15th century.
Architectural highlights include a meridional porch fixed by twelve horseshoe arche), which were built in two different phases: the seven occidental arches, with columns and steeples are in the moorish style, while the Mozarabic work from the 10th century is preserved in the alfiz decorations around the arches.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.