Dominating the southern side of Tito Square is the imposing Praetorian Palace, which has served as the municipal seat for some eight centuries. Its Venetian Gothic design dates from the middle of the 15th century, with the outer staircase and balustrade added fifty years later, and the overall appearance of the façade taking shape in 1664 after significant renovations. After serving various purposes following the downfall of the Venetian Republic at the hands of Napoleon in 1797, the building underwent a decade long restoration in the 1990s and now once again serves as the municipal seat and mayor's office, as well as the Tourist Information Centre.
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.