St Mary's Church, Tal-y-llyn is a medieval church near Aberffraw in Anglesey, north Wales. It was originally a chapel of ease for the parish church of St Peulan's, Llanbeulan, but the township that it once served, Tal-y-llyn, no longer exists. It was declared a redundant church in the early 1990s, and has been in the care of the Friends of Friendless Churches since 1999. Services are held once per month during part of the year.
The date of the church is unknown, but the oldest parts could be from the 12th century. The chancel was rebuilt in the 16th century, and a side chapel added in the 17th century. The church furnishings, such as pews, pulpit and communion rails, were added in the 18th century, although some of the pews are modern replacements after vandalism.
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.