The existing St Petroc's Church is dated 1469–1472 and was until the building of Truro Cathedral the largest church in Cornwall. It was originally a Roman Catholic church, but became an Anglican church as a result of the English Reformation. The tower which remains from the original Norman church and stands on the north side of the church (the upper part is 15th century) was until the loss of its spire in 1699 150 ft high. The building underwent two Victorian restorations and another in 1930. It is now listed Grade I.
The parish of Bodmin is now grouped with Cardinham, Lanivet and Lanhydrock parishes. There is a chapel at Nanstallon.
There are a number of interesting monuments, including the black Delabole slate memorial to Richard Durant, his wives and twenty children, carved in low relief. There is also a twelfth-century ivory casket which is thought to have once contained relics of St Petroc.
The font of a type common in Cornwall is of the 12th century: large and finely carved. The type may also be found at Altarnun and elsewhere but Bodmin's font is the largest and most highly ornamented of any of this type.
The churchyard is extensive and on a slope: the Chapel of St Thomas Becket is a ruin of a 14th-century building in the south-east of the churchyard. St Guron's Well is a small building of granite at the western entrance to the churchyard.
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.