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 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.