Sts. Peter and Paul Cathedral (Cathedral of SS. Peter and Paul) is the dominant building in the old town — a large Latin rite Catholic church built between 1580 and 1640 in a mixture of Renaissance and Gothic styles. The most striking feature of the exterior is the Ottoman minaret added in 1672 during the brief Turkish occupation, which still rises beside the church tower and is topped by a later statue of the Virgin Mary.
Inside, the cathedral contains Renaissance and Baroque interior furnishings accumulated over centuries, including altarpieces, frescoes, and episcopal tombs. The building was damaged and partly stripped during the Soviet era but has been substantially restored. The tower, which you can climb, gives the best views of the old town and the canyon. The cathedral is surrounded by a small square that forms the social centre of the old town.