St Adwen's Church is a Grade I listed parish church in the Church of England in Advent. It is the only church in Cornwall to have eight pinnacles to its tower.
The north transept and the west tower date from the 13th century. The font is Norman. The south aisle is 15th century.
The church was restored in 1847-48 when the south chapel was demolished. From 1872 to 1874 the north walls of the nave and chancel, and the whole of the north transept was rebuilt. The pews were removed and open seating was provided.
The ecclesiastical parish is the responsibility of the Rector of Lanteglos-by-Camelford, and Advent has been associated with Lanteglos since medieval times.
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.