St Michael's Church was probably built by the Reigny family; earliest records of it date to the Taxation of Norwich in 1254, where it was referred to as St Michael de Renny and was valued at four marks. The parish at one time consisted of the Manor of Michaelston-le-Pit and the church was an advowson included with the manor in the 15th and 17th centuries. By 1563, a cleric was in residence.
The church has many items which date to medieval times, including a baptismal font which was lost at the time of the Battle of St Fagans and was later discovered in a local field. It also has the only triple decker pulpit found in the Vale of Glamorgan. The lychgate of the churchyard is a memorial to local soldiers killed in World War I.
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.