San Felices de los Gallegos Castle has an historical purpose as the frontier stronghold between Portugal and Castile. The enclosure with medieval origins is protected by the castle and the walls which were built in successive periods. The wall, built of stone blocks with adjoining square towers, dates from the 13th century and encircles a spacious bailey. The keep dates from the 15th century, and a third fortified enclosure with bastioned walls dates from the 17th century.
Inside the walls, it is worth noting the parish church (12th-13th centuries) in the transitional Romanesque style (façade and belltower) modified in the Gothic-Renaissance period (16th century), with three naves and a main chapel.Highlights of its civil architecture are buildings such as the Town Hall (16th century) and the Alhóndiga, the former hospitals of Rocamador and La Misericordia, and various noble mansions with their carved coats of arms (16th to 18th centuries), such as the houses known as Los Mayorazgos, El Corregidor and Los señores de Ron.
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.