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:Trenčín Castle is relatively large renovated castle, towering on a steep limestone cliff directly above the city of Trenčín. It is a dominant feature not only of Trenčín, but also of the entire Považie region. The castle is a national monument.
History of the castle cliff dates back to the Roman Empire, what is proved by the inscription on the castle cliff proclaiming the victory of Roman legion against Germans in the year 179.
Today’s castle was probably built on the hill-fort. The first proven building on the hill was the Great Moravian rotunda from the 9th century and later there was a stone residential tower, which served to protect the Kingdom of Hungary and the western border. In the late 13th century the castle became a property of Palatine Matúš Csák, who became Mr. of Váh and Tatras.
Matúš Csák of Trenčín built a tower, still known as Matthew’s, which is a dominant determinant of the whole building.