The Puerta de Palmas is a former city gate built in 1551. It has two cylindrical towers flanking the entrance door. Prince Philip II and Emperor Charles V and date of construction are mentioned on the outer side of the tower. The towers are fortified with battlements and they have two decorative cords at the top and bottom levels. Its entrance is east-facing, and is double-arched and is decorated with medallions of the shield of the Emperor Charles V. It was once used as a prison, but has since undergone many renovations and has been an entrance point to the city.
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.