The Loughinisland Churches are the remains of three ruined churches, dating from the 13th to the 17th centuries. They are situated in Tievenadarragh townland, in a large graveyard on an island in Loughinisland Lake, now reached by a causeway.
The earliest recorded reference is to a parish church on the site in 1306. The Middle Church is the oldest, probably from the 13th century. The large North Church was built in the 15th century, probably to replace the Middle Church, and continued in use until 1720. The smallest is the South (MacCartan's) Church, the elaborately carved west door of which has the date 1636 and initials PMC for Phelim MacCartan. This was probably the main burial ground of the MacCartans who had one of their chief seats near the lake.
The North Church was in use until about 1718. Local accounts say that at one time there was an amicable arrangement for the church to be used for both Protestant and Roman Catholic worship, but that a dispute rose one wet Sunday, when Roman Catholics were unwilling to leave the church due to the rain, and free the church up for the Protestants. This displeased the Forde family so much that they dismantled the old church and built a new one in Seaforde which was roofed with the timbers of the old building.
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.