Mingarry Castle was considered a strategically important site in terms of communication with overseas areas and as an entranceway to the Sound of Mull. Originally built in the 13th century for the Clan MacDonald of Ardnamurchan, the castle has had many different occupants. King James IV of Scotland used it as a stronghold for fighting off Clan Donald in the late 15th century. In 1515 the castle was besieged by the Clan MacDonald of Lochalsh and again two years later when they finally took the castle.
In 1588 the chief of the Clan MacLean of Duart resided there after capturing the chief of the Clan MacIan of Ardnamurchan. In 1588, one of the ships of the Spanish Armada, named the San Juan de Sicilia, landed on Mull and MacLean of Duart used troops from the ship to aid him in his warring against the MacDonalds of Clanranald and the MacIans of Ardnamurchan. On one occasion, a force from the ship besieged to the castle for three days before withdrawing.
Other occupants over the years included the Clan Campbell, the Earls of Argyll (in 1612), and Alasdair Colkitto MacDonald who fought the English Parliamentarians of Oliver Cromwell in 1644. The majority of the current building dates from the 17th century onwards. Mingarry is roughly hexagonal in shape with nine-foot-thick walls, thicker on the seaward side.
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.