Montornés Castle sits on Roman remains. Built in the 10th century as part of a Moorish defence system, the castle was reinforced and extended by the Christians after the Reconquista.
The castle is composed of three areas surrounded by a curtain wall and forms a triangle with Torre San Vicente and Casoleta de Salandó, two structures that served to further strengthen its defence. In the present-day, only some sections of the wall, cisterns and two watchtowers are standing. It is not known exactly how and when the fortress was destroyed, though it is known that it was inhabited until the 15th century.
There are beautiful views over the Plana (Plain) of Castellón and the Mediterranean Sea.
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.