Mosque–Cathedral of Córdoba construction of the Great Mosque, which was considerably expanded by later Muslim rulers. Córdoba returned to Christian rule in 1236 during the Reconquista, and the building was converted to a Roman Catholic church, culminating in the insertion of a Renaissance cathedral nave in the 16th century. Since the early 2000s, Spanish Muslims have lobbied the Roman Catholic Church to allow them to pray in the cathedral. This Muslim campaign has been rejected on multiple occasions, both by the church authorities in Spain and by the Vatican. It is commonly believed that the site of the Mosque-Cathedral was originally a Christian
St. Nicholas Roman Catholic Cathedral, Kiev building is in emergency conditions. The religious services are performed by priests of the Missionary Oblates of Mary Immaculate. Most of the services are conducted in the Ukrainian language, while on some days services conducted in Polish, Latin and in Spanish. St. Nicholas Roman Catholic Cathedral, Kiev The Roman Catholic Church of St. Nicholas (; translit.: "Kostel Sviatoho Mykolaia") is the second oldest Roman Catholic church standing in Kyiv, the capital of Ukraine after the St. Alexander Roman Catholic Cathedral. Today the building is shared between the Roman Catholic Church of Ukraine and the National House of Organ and Chamber