Martinengo castle, dominating the gulf of Sensole, is one of the most characteristic monuments of the Monte Isola island.
The tower was probably built already in the 12th-13th centuries, around which the Oldofredi family from Iseo built the current structure during the 14th century. The quadrangular enclosure shows the sharp corners in the curtain wall towards the lake, naturally protected by the rocky wall, while the corners facing inland are reinforced by two round towers. In the west there is the entrance preceded by a ravelin (external fortification to protect the door) with a drawbridge.
The fortress was purchased during the 15th century by the Martinengo family who transformed it into a residential building. Large 16th century windows with Sarnico stone moulded frames were traced on the walls, once devoid of openings. The entrance was also embellished by a grey sandstone ashlar portal framed by two pillar strips supporting a striking entablature with the inscription “EX ALTO”.
The Martinengo family did not live for long in the fortress, which already fell into disrepair towards the end of the 17th Century. The castle, now abandoned, was taken over by the Salvadego family in the first half of the 19th Century and then purchased in the 1960s by the Mascheroni family of Monza who restored it whilst preserving the ancient structures.
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.