The Church of St Nicholas is a Greek Catholic church in Valletta. It was originally built to serve as a Greek Orthodox church in 1569. Following the Union of Brest in 1595-96 the Greek Catholic Church came into existence. It was in 1639 that the then parish priest decided to separate from the Orthodox church and join the Greek Catholic Church.
Some time later it was decided to rebuild the church to the design of the Italian architect Francesco Buonamici. The church was rebuilt on the ground plan of a Greek cross in 1652. It has a dome over the crossing supported by four free-standing columns, and a choir in the apse. On September 17, 1766, the parish church and the Confraternity of the Holy Souls signed a concordat that regulates their relations.
The church suffered considerable damage during World War II; it was repaired by the year 1951.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).