Dynge Castle, also Dyngehus as it was once called, was a Norwegian fortified castle in use from approximately 1250 and onwards towards the beginning of the 16th century, when it burnt down. Located in central Bohuslän, since then passed into Swedish possession, the castle was mentioned several times in Norwegian records. The site was excavated 1912-1913 by Wilhelm Berg, who had also excavated the contemporary and largely similar castle Ragnhildsholmen Castle during the 1880s, and Olsborg Castle. Since then, the site has had no closer examination by archaeologists.
The castle was in shape similar to a motte-and-bailey, with a stone keep surrounded by a small moat, standing on top of a cliff overlooking Gullmarsfjorden. The foundations of the central keep's walls remain clearly visible, as does the moat. It is one of few remaining medieval structures in Uddevalla Municipality, alongside Dragsmark Abbey and Bokenäs Old Church.
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.