Cordoba

A forest of 900 columns, red and white arches stretching as far as you can see, delicate filtered light falling on intricate mosaics. Built in the 10th century, the Cordoba Mesquita is considered one of the most beautiful mosques ever built. After the Reconquista, it was turned into a Catholic church, with the center demolished to make way for a cathedral.

Around the same time, at the other end of Europe, Hagia Sophia was having the reverse faith…