Coordinates: 38°20′43.5″N 0°28′57″W / 38.345417°N 0.48250°W
The Co-cathedral of Saint Nicholas of Bari (Valencian: Cocatedral de Sant Nicolau de Bari, Spanish: Concatedral de San Nicolás de Bari) is a Roman Catholic co-cathedral located in Alacant, in the Valencian Community of Spain. The church, part of the Diocese of Orihuela-Alicante is dedicated to Saint Nicholas and was elevated to the title of cathedral on 9 March 1959 by Pope John XXIII.
This church was built between 1613 and 1662. It was designed between 1610 and 1615 by Agustín Bernardino, a student of Juan de Herrera, and was constructed over an ancient mosque. The older cloister was built originally in the 15th century in Valencian Gothic style.
The cathedral has a Latin cross plan, though the transepts are quite short. flanking the nave are six interconnecting side chapels and an ambulatory around the apse. A blue dome rises 45 meters above the crossing. The chapel of Holy Communion, configured as a small Greek cross-planned temple, is considered to be one of the most beautiful examples of the Spanish Baroque.