The oldest monument of Boulogne-sur-Mer was built in three stages, in the 12th, 13th and 18th centuries. In fact, this belfry was originally a seigniorial prison, transferred to the community in 1230. 38 years later, Saint-Louis ordered the destruction of the tower’s second floor, as well as of the community’s charter of freedom and the town’s seal, as it was refusing to pay a tax on the eighth crusade. One year later, the town, its privileges restored, was able to rebuild the missing part. As for the last octagonal level, it was built in 1734, after the spire was burnt.
Today the belfry is one of 56 in northeastern France and Belgium with shared UNESCO World Heritage Site status and serves as the home to a museum of Celtic remains from the Roman occupation.
Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.