Palermo Cathedral. According to Wikipedia it is the "cathedral church of the Roman Catholic Archdiocese of Palermo. ... As an architectural complex, it is characterized by the presence of different styles, due to a long history of additions, alterations and restorations, the last of which occurred in the 18th century. ... The church was erected in 1185 by Walter Ophamil (or Walter of the Mill), the Anglo-Norman archbishop of Palermo and King William II's minister, on the area of an earlier Byzantine basilica. By all accounts this earlier church was founded by St. Gregory and was later turned into a mosque by the Saracens after their conquest of the city in the 9th century. ... The upper orders of the corner towers were built between the 14th and the 15th centuries, while in the early Renaissance period the southern porch was added. The present neoclassical appearance dates from the work carried out over the two decades 1781 to 1801."

Detail of the front of the Cathedral.