How many cathedrals are there in lucca?

Lucca, a historic city in Tuscany, Italy, is home to several notable churches, but the most prominent is the Lucca Cathedral, also known as the Cathedral of San Martino. While the city has numerous other churches and religious buildings, there is only one main cathedral. In total, there are around 20 churches in Lucca, but the cathedral stands out as the primary ecclesiastical structure.