Although travelers often compare two Orthodox churches of St. Luke and St. Nicholas in the Montenegrin town of Kotor, the only thing that unites both churches is their location: they stand in one square. Apart from that, they are two dissimilar monuments of temple architecture, built at different times in various styles.

The Church of St. Luke is considered one of the oldest temples in Kotor. Its construction began in 1195 during the reign of the ancient Serbian Nemanjic dynasty. Almost two centuries later, the building was complemented with arches and a magnificent dome in the Byzantine style. The magnificent bell tower with three bells was added to the church much later. However, the entire ensemble seems to be made in one style. In general, the medieval Church of St. Luke combines two architectural styles, Romanesque and Byzantine. The ancient Romanesque style is most clearly visible in the masonry, and the design corresponds to all the Byzantine canons.

Until the middle of the 18th century, the site of the Chapel of St. Spyridon was occupied by monastic cells. Today, the main decoration of the chapel, which catches the attention of all visitors, is a modest rose window, inspired by ancient churches of the Early Middle Ages. The floor in the church's main hall comprises 17 tombstones with carved Roman numbers. They correspond to the number of people buried under each tombstone. In medieval Europe, it was customary to found cemeteries inside churches and bury several people in one grave due to the lack of free space. After the Austro-Hungarian Empire came to power, the cemetery was removed from the church, but the graves inside it remained intact. Since then, the interior of the Church of St. Luke has not changed. Modern tourists can still see the original frescoes of the Three Saints in the classic Byzantine style.