St. Nicholas Church in Altefähr was built of brick in the second half of the 15th century to the site of earlier 13th century chapel. It was painted in 1692 and the tower restored. The next renovation took place in 1737. After the upper third of the tower had collapsed in 1803, the tower was rebuilt. Another extensive renovation of the church took place in 1912-1913. The interior contains valuable wall murals from the 15th century.
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.