Alytus mound is the only preserved witness of the foundation of the town and it dates probaly from the 11th century. It is said that a wooden castle was standing here in the 14th century that was burnt down later by the Teutonic Order. The detailed route to Alytus castle is described in Teutonic “The Description of Lithuanian Roads”, this castle defended the main roads to Trakai and Vilnius from crusaders.
An impressive panorama of the town opens from the mound, while its foot is decorated by an exposition of sculptures “Ancestors of Alytus Mound”.
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.