The first documents of Zalatambor Castle date back to 1024. This fort became known since the 13th century as the castle of Zalatambor, coinciding with the first fortifications made in the main rock.
In addition to the successive extensions and reforms of Zalatambor, the defense of the city was reinforced with the construction of a new castle, Belmecher, in 1276, and a tower as a defensive watchtower that, following the mountainous ridge, guarded the path of Castile. The three fortifications were joined by a wall forming the Estella castle enclosure, totally independent from the city.
Zalatambor Castle was a royal residence during the 13th, 14th and 15th centuries, with numerous rooms prepared for this purpose. However, since the mid-15th century the state of the castle, the result of the crisis caused by the civil war between Agramonteses and Beaumonteses, forced the monarchs to lodge during their stay in the noblest houses of the city.
In 1512 , the Beaumontesa-Castilian coalition conquered the castle, which, along with the rest of the kingdom, passed into Castilian hands. However, it continued in use until 1572, when the new defensive plan against France led to the construction of the citadel of Pamplona and the abandonment of the medieval Navarrese castles.
Its partial destruction was carried out by blowing up the main defensive elements. However, the current state of the castle is mainly due to its use as a quarry, documented in numerous lawsuits since its blasting.
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.