The Tour Magne, or the Great Tower, is the only remnant of the ancient Augustan fortifications. Standing at the highest point of the Nïmes, Mont Cavalier, it overlooks the entire plain and is a focal point for all means of communication.
The tower was originally a dry-stone oval tower, with a maximum height of 18m and already part of a rampart. A structure that was both prestigious and strategic, it represented sanctuary and protected the oppidum. By doubling its height and incorporating it into the town walls, Augustus demonstrated the new power of the colony of Nîmes over the 'City' (in the territorial sense) of the Volcae. When the town’s population abandoned the higher ground, the Tour Magne nevertheless continued to play a military role. It was used to defend against the English during the Hundred Years’ War.
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.