The Cathedral Basilica of Saint Stephen was built in the late 1010s by Saint Stephen I, the first King of Hungary. It was the most significant place of the Kingdom of Hungary in the Middle Ages, as it contained the crown jewels, including the throne, the Holy Crown of Hungary, the treasury and the archives. 37 kings and 39 queens consort were crowned in this basilica and 15 were buried in it. In 1543, the Turks occupied Székesfehérvár. The royal graves were ransacked and the basilica was used to store gunpowder while St. Martin's Cathedral in Pozsony became the new coronation site.
In 1601, the valuable building was destroyed by fire. Just in 1601, the Ottoman rule of the city was interrupted for about one year. Illustrations of the 17th century suggest that the fire and probable blow up was caused by Christian artillery in the course of the Christian conquest.
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).