The Church of St. Peter was officially consecrated in 1198. The part in white and black bands dating from the 13th century (probably made between 1256 and 1277), and was restored between 1931 and 1935. This part was derived from an older body, which consists of the early church, but left the bell tower is based on the chapel left of the presbytery.
The original church dates from the 5th century, in Syriac type, with rectangular plan and semicircular apse. It lost the title of parish in the late 14th century, in favor of the Church of San Lorenzo. It was officiated by the secular clergy until 1798.
References:The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.