San Nicolas Cathedral is located in Alicante. The church was built between 1613 and 1662 by Augustine Bernannio. The title of cathedral was given by Pope John XXIII in 1959. The interesting thing about it is that it was built on an old mosque. It is distinguished by its blue dome, which is 45 meters high. Under the dome is the chapel "Capilla de la Comunion", which is considered one of the most beautiful examples of Spanish Baroque.