The Abbey Church of Saint-Pierre-sur-Diveswas was rebuilt in the 12th century and 13th centuries and restored and modified in the 16th and 17th centuries, replacing the former abbey church built in 1011 by William the Conqueror's aunt, Countess Lesceline. The church was entirely restored in the 16th century. By that time it got its general current appearance: a long main nave with two aisles and five radiating chapels, in the gothic style.
References:Trenčín Castle is relatively large renovated castle, towering on a steep limestone cliff directly above the city of Trenčín. It is a dominant feature not only of Trenčín, but also of the entire Považie region. The castle is a national monument.
History of the castle cliff dates back to the Roman Empire, what is proved by the inscription on the castle cliff proclaiming the victory of Roman legion against Germans in the year 179.
Today’s castle was probably built on the hill-fort. The first proven building on the hill was the Great Moravian rotunda from the 9th century and later there was a stone residential tower, which served to protect the Kingdom of Hungary and the western border. In the late 13th century the castle became a property of Palatine Matúš Csák, who became Mr. of Váh and Tatras.
Matúš Csák of Trenčín built a tower, still known as Matthew’s, which is a dominant determinant of the whole building.