Bryher is the most westerly settlement in England, therefore All Saints' Anglican church can claim to be the most westerly church in the Anglican provinces of Canterbury and York.
The earliest record of a permanent church on Bryher is the account of the dedication of a small building to God and All Saints by the Chaplain of St Mary's, Revd Paul Hathaway, in 1742. It was approximately 24 feet by 13 feet and also served the community on Samson.
The church is built of granite rubble on a rectangular plan and was enlarged in 1822 by the surveyor Christopher Strick to provide seating for 154 people. There were repairs in 1832 and 1833 by Thomas Downing, carpenter and William Williams. The tower and porch were added in 1860. There is a plain granite font dated 1861. There were additions and alterations in 1882 and a new chancel was added in 1897 and new roof (6 feet higher than the previous) in 1930.
The church has been listed since 1975. The stained glass windows were replaced, the work being completed in 2007; all four lights are by Oriel Hicks of Phoenix Studio and represent sayings of Jesus Christ.
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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.