Magheraghanrush Court Tomb was built c. 3000 BC. It may have first been a simple construction with U-shaped court; the east part was added later.
Local legend has it as a Giant's Grave or Druid's Altar, or the burial site of Eógan Bél (d. AD 542), King of Connacht, although the Middle Irish poem Caithréim Cellaig says he was buried on Knocknarea and reburied on an island in Lough Gill.
The tomb is very large, 30 m long. The court is oval and located in the centre with two chambers at one end and a single chamber at the other, giving it the appearance of a man from above. The central court is not a perfect oval but is crooked in the middle, indicating that there was originally one court cairn which was then added to.
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.