The Fort de Valros is a ruined small castle or fortress. The site has no visible trace of occupation from antiquity, but archaeological digs have uncovered the remains of a necropolis used from the 8th to the 10th century.
The promontory on which the fort stands is a strategic observation post. It dominates the valley of the Thongue and controls two very ancient communication routes: the roads from Béziers to Pézenas and from Saint-Thibéry to Alignan-du-Vent. From historical records, it is known that in 1199, the powerful Viscount of Béziers, Raymond Roger Trencavel, authorised his vassal Etienne de Servian to build a forcia on the podium of Valros. But, from 1210, during the Albigensian Crusade, Etienne de Servian was forced to recount, under pressure from the troops of Simon de Montfort. Thus, the fortress had only a short functioning military life. It was dismantled soon after its construction, in the first half of the 13th century. Thereafter, the site continued to be frequented by troops who took water from the cistern, which never dried up.
The small square tower nestled in the south west corner of the fortress is a remnant of the aerial telegraphy invented at the end of the 18th century by the engineer Claude Chappe (1763-1805), using semaphore signals.
References: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.