The Collegiate church of Santa María la Mayor (Church of Saint Mary the Great) is one of the most characteristic examples of transitional Romanesque architecture in Spain, the church of Santa María la Mayor is inspired by the Cathedral of Zamora, in turn inspired by the Old Cathedral of Salamanca. The tower-dome is usually listed as one of the four most typical in León together with those in the cathedrals of Salamanca, Plasencia and Zamora.
It was begun around 1170, and was finished in the mid-13th century. Two different directors of the work have been identified, according to the different types of stone used (limestone in the old sections, sandstone in the most recent ones), and by the barrel vaults in the transept. The church is on the Latin cross plan, with a nave and two aisles, with a transept over whose crossing is the hexadecagonal dome. The transept ends with three semicircular apses.
Notable is the Majesty Portico (Pórtico de la Majestad), which houses the southern entrance. It was built in the reign of Sancho IV of Castile and León (1284–1295), and is decorated with polychrome sculptures depicting scenes of the life of the Virgin, Christ and the Final Judgement.
Also in the church are the Flemish painting La Virgen de la Mosca ('Virgin of the Fly') and an unusual sculpture of a Pregnant Virgin, dating to the 13th century. The painting of the Virgin of the Fly is especially unusual because of the realistic portrayal of a fly on the tunic which covers the Virgin's knee. Studies of the work demonstrate that this insect was added later. These same studies have pointed out numerous touchings-up in the original painting, such as the halo that surrounds the head of the Virgin, previously covered by a veil, or the rich embroidery on the dress of Saint Catherine of Alexandria, whose face has a great resemblance to some paintings of Isabella I of Castile.
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.