St Catherine's Church is a church in the village of Llanfaes, Anglesey. The building dates from the 19th century. It was designated as Grade II-listed building on 20 February 1978.
St Catherine's Church has origins dating from the medieval era, however the oldest part of the current structure is the west tower, which was built in 1811 by Lord Bulkeley. The current nave, chancel, porch and tower spire were all built in 1845 by architects from Sheffield. The organ chamber was added in 1890 by Henry Kennedy, an architect from Bangor. It was designated a Grade II-listed building on 20 February 1978.
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.