Blomsholm stone ship is one of the oldest in Sweden, more than 40 metres long with 49 stones. The bow and stern are about 4 metres high and dates from the early Scandinavian Iron Age (c. 400 - 600 AD). The size and prominent position of the grave shows that an important person must be buried here. There are also several other large megaliths in the area; Another stone circle and menhirs (Neolithic age) stand in the wood near the viking-ship shaped stone circle.
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.