On the border of the Rhône river, the archaeological site of Saint-Romain-en-Gal is home to the Gallo-Roman remains of an ancient district of Vienne. Its museum recounts the ancient history of Vienne and boasts a magnificent collection of mosaics. Saint-Romain-en-Gal is one of the largest Gallo-Roman sites in France.
The classified site contains more than 3 hectares, where are located the remains of residential and commercial area built between 1st and 4th centuries AD.
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.