An early medieval castle in Malpaga had been in ruins after a raid in the 1440s. In 1456, the condottiero and nobleman Bartolomeo Colleoni acquired the ruined castle from the commune of Bergamo. He enlarged and enriched it not only as a military base for his troops, but also as a seigneurial residence, in the typical Italian Renaissance fashion.
The castle layout is square, surrounded by two lines of walls and a ditch. The first line, now disappeared, included the stables and the barracks. The walls are characterized by merlons. The castle's internal walls are almost entirely frescoed, although some of them have deteriorated or been vandalized. Some frescoes celebrate the 1474 visit of King Christian I of Denmark and the sumptuous hospitality given him by Bartolomeo Colleoni, including banquets, hunting expeditions and tournaments. They were commissioned by Bartolomeo's heirs around 1520-1530 to celebrate the family's most famous member, and are attributed to Il Romanino. On the first floor are 17th-century frescoes of lesser quality.
Aside from Christian I's visit, the frescoes also depict allegories, such as that of Silence (an allusion to the secrets which should be kept by the castle's personnel), and the idealized portraits of Colleoni and the king. In the courtyard, also attributed to Romanino, is the depiction of the Battle of Molinella (or Riccardina), fought by Colleoni in 1467 near Bologna. Another 15th-century fresco of the Madonna with Child, by an unknown artist, is found in Colleoni's private studio.
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.