The parish of Siġġiewi is one of the 10 parishes mentioned by Bishop de Mello in 1436. After outgrowing the old church, the parishioners agreed that a new parish church was required to meet the needs of the local population. The design of the church was carried out by Lorenzo Gafa who drew from his experience as Buonamici’s assistant on the St Paul’s parish church in Rabat.

The first stone of the new parish church dedicated to St Nicholas of Bari was laid on April 19, 1676.

The church has an unaisled cruciform plan with a three-bay nave and a choir and transepts that terminate in a semicircular apse. The imposing entablature runs all along the internal perimeter, projecting strongly over the corners.

The façade was rebuilt to its present state in 1864 to a design by Nikola Zammit containing a three- portal entrance vestibule with freestanding Doric column pairs.

Symmetrical bell towers flank the frontal nave wall which is raised as a classical temple-front façade. An imposing high dome and lantern looms over the church’s façade.

The Malta Environment and Planning Authority scheduled the parish church as a Grade 1 monument on August 26, as per Government Notice 782.