The Church of San Pedro Apóstol is considered a National Historic-Artistic Monument in Vitoria from the 13th-14th centuries. The temple was attached to the western wall of the medieval town, which is why the walls on the west are very thick. In the central nave the walls form a tower which is visible from the outside of the temple.
Gothic façade dates from the 14th century, accessible from Calle Herrería. The entrance is the opposite way round in this church because the wall used to run along the bottom of the central nave.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.