The Chiesa di Sant’Efisio is a small church that was built in the 18th Century and closely associated with the martyr and Festa di Sant’Efisio. In the second chapel is the effigy of the saint which is the main focal point of the procession, and the holy cross, carried at Easter, is in the third chapel. The wooden altar holds a rather different version of the saint’s image, wearing armour with a plumed helmet. The French fleet fired the cannonballs buried in the walls at the rear of church in 1793 during an attack on Cagliari.