According to several historical documents, the fortifications in Colombaia island were built first time around the 260 BC, During the first Punic war. The Roman army tried several times to conquer this island, succeeding only in 247 BC, although they left it shortly after and left the territory totally in disuse, with the Castle of the Dovecote which quickly became a nest of doves that would have given way to the pagan worship of the goddess Venus Ericina, who sees his sacred animal in the dove. The arrival of the Arabi in Sicily allowed the Castello della Colombaia to finally find a new function, as it was used as a Lighthouse, being able to illuminate the seas and reactivating one of the most important military buildings until recently.
The arrival of the Aragonese in Sicily it was very important for the Castello della Colombaia, since, seeing its geographical position and the incredible advantages that it could have guaranteed, they decided to completely rebuild this military building, making it decidedly larger and more equipped than the first historical building. The works carried out by the Aragonese are still visible, as it is the same building that has come down to the present day. The Colombaia Castle was also one of the main fortifications during the reign of Charles V, as it allowed to spot and fight any incursions by pirates who intended to attack the Trapani coast. The expansion works also continued in the following centuries, with renovations that continued until the seventeenth century.
The Colombaia Castle is tall well 32 meters articulated on 4 floors, each of which was used for particular functions. The entrance was only possible from the second floor, which is why the Colombaia Castle is thought to have been equipped with a drawbridge. The structure is very large and consists of a shape octagonal, inside which there are small streets that connect the various buildings, which include the guard post, two docks, chapels and courtyards.
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.