Today Orphir contains the remains of Scotland's only surviving circular medieval church. Built in the late 11th, or early 12th century, the Orphir Round Church is thought to have been built by Earl Hakon. Dedicated to Saint Nicholas, its design was inspired by the Church of the Holy Sepulcher in Jerusalem.
At the time of the church construction, the Great Crusades were in full swing and the circular church had become a popular design with returning crusaders attempting to copy the famous structure in the Holy Land.
Originally, the church consisted of a circular nave just over six metres in diameter and an apse. The apse remains today, along with a small section of the nave's eastern section.
The church survived, almost complete, until the middle of the 18th century when sections were pulled down and the stone used to construct the new parish church. The replacement parish church did not last and no trace survives today.
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.