Quattro Canti, officially known as Piazza Vigliena, is a Baroque square in Palermo, region of Sicily, Italy; it is considered the center of the historic quarters of the city. The site is the intersection of two major streets in Palermo, the Via Maqueda and the Corso Vittorio Emanuele, and at this intersection are the corners of all four of the ancient quarters of Palermo: the Kalsa (SE); Seralcadi (SW); Albergaria (wW); and Castellammare (NE). On the southwest corner stands the church of San Giuseppe dei Padre Teatini. A few steps away along the flank of this church, behind the Southeast corner building, along Via Maqueda is the Piazza and Fontana Pretoria, sandwiched between this church and Santa Caterina. A few more steps reaches San Cataldo and the ancient Norman church of La Martorana. About 500 meters west along the Cassaro is the piazza of the Cathedral of Palermo and the adjacent Palazzo Normani.