Montorio Castle was presumably a look-out post which was once part of the Verona city fortifications and which is first mentioned in documents dating back to 995 AD. It was subsequently rebuilt by the Aldobrandeschi in the Middle Ages and restructured by the Ottieri and then transformed into a fortified farmhouse after the annexation of the county in the Grand Duchy of Tuscany. Only certain sections of the structure remain, as four of the seven towers were demolished (as well as parts of the walls) by the Austrians in 1820. The castle now serves as a venue for cultural events held in the summer.
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.