The Fatetar Castle is located on the top of the Monte Fatetar, in the highest part of the town and enyoy stunning views of both, the village and its surroundings.
Apparently the Fatetar Castle was built by Abderrahman III in 914. Though its origins are not well known, many cultures haved passed through this place, such as the Romans, Visigoths, Arabs, Muslims and Christians. Today you can still observe its keep and the remains of its walls.
The Chapel of the Holy Christ of Antigua is located adjoining the west angle of the Fatetar Castle which stands on the summit of a hill north of the Espera town, with which it forms and architectural unit. The Chapel of the Holy Christ of Antigua served as a church to the inhabitants of the town until the consecration in the early seventeenth century, the Church of Our Lady of Grace, with the patronage of St. James, patron of the Christian Reconquests, wich suggests its pssible construction by the first Spanish forces that garrisoned the castle from the second half of the thirteenth century.
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.