The medieval Kirkkonummi brick church was built in the 15th century. The local parish was established in 1240 and there have been several wooden churches at the same site before. The present church has been renovated and modified several times. In 1570s Russian soldiers damaged church and it was burnt by lightning. Next renovations were made in 1637 and again in the 19th century.
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.