The Church of St. Mary of the Admiral, also called Martorana, is the seat of the Parish of San Nicolò dei Greci, overlooking the Piazza Bellini, next to the Norman church of San Cataldo, and facing the Baroque church of Santa Caterina in Palermo, Sicily, southern Italy.

The Church of San Cataldo is a Catholic church located at Piazza Bellini, in central Palermo, Sicily, Italy. Erected in 1154 as a notable example of the Arab-Norman architecture which flourished in Sicily under Norman rule on the island, the church is annexed to that of Santa Maria dell'Ammiraglio. Since the 1930s, it belongs to the Order of the Holy Sepulchre.