Gradačac Castle has a fort with walls 18 metres high, built between 1765 and 1821, and a watchtower 22 metres high, built in 1824 by Husein-kapetan Gradaščević on foundations made originally by the Romans. It is finished in the 19th century. In 1831 general rallied the Bosnians against the Turkish occupation and drove the Ottomans out to Kosovo, winning Bosnia its sovereignty for the coming year. Therefore, fortification has great historic importance for Bosnians. It has been recently renovated.
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).