Nuraghe and Chruch of Santa Sabina

The circular tower on the left is Nuraghe of "Santa Sabina" and the church on the right is called Church of "Santa Sabina". The Nuraghes are ancient megalithic edifices typical to Sardinia. These were constructed during the Nuragic Age between 1900-730 BC. There is no consensus on the function of the Nuraghes: It is not known whether these were religious temples or dwellings or military strongholds etc. (Wikipedia)

The Santa Sabina Nuraghe dates from 1600-1000 B.C. It is a single 8.40 meters high tower with a circular chamber inside. (Source)

The church which also has circular plan was built between 10th and 11th century. Its design could have been inspired by the nearby tower which pre-dates it by several centuries. (Source)