The parish of Santa Maria de Sintra dates back to the time of Portugal’s foundation as a nation, when Dom Afonso Henriques, the first king of Portugal, conquered Sintra from the Moors. At that time, a small chapel was built here, later reconstructed in the 13th century by the prior Martim Dade.
The great earthquake of 1755 caused serious damage to the church, but the original Gothic portico survived, displaying the Renaissance features that correspond to alterations made in the 14th century.
Inside, the attention of visitors is drawn to the medieval decoration of the capitals and the painted and panelled vault of the ceiling, the Manueline font, a Renaissance stoup and an excellent 17th-century painted and gilded statue of Our Lady of the Conception.
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.