Castle d'Eivissa, also known as Ibiza Castle, stands atop Puig de Vila. Its history goes back to the Middle Ages and the Moorish era. Currently, the partially restored complex is surrounded by thick walls, which are a reconstruction of the Renaissance fortifications.
The two defensive elements of the old fortress have been best preserved to the present day. The first is the Baluarte de Sant Jaume bastion, where you can see an exhibition of weapons used to defend the walls of Ibiza. The second is Baluarte de Sant Pere, which houses an exhibition devoted to the history of the castle and its subsequent extensions.
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.