Originally the Doornenburg castle was a fortified manor built in the 9th century, under the name Villa Dorenburc. In the 13th century it was converted into a modest castle. Through the centuries the castle was expanded further into the current form. The front-castle was built in the 15th century. The front-castle contains sleeping quarters, a chapeland a farm, the last being a unique feature for a Dutch castle. It is one of the biggest and best preserved castles in the Netherlands.
Castle Doornenburg was occupied until the 19th century. After that it fell into neglect. In 1936 the Stichting tot Behoud van den Doornenburg was created, which had the castle restored from 1937 to 1941. In the end of the Second World War the castle was almost completely destroyed. It was long thought the Germans had blown it up, but it turned out that the castle had been hit by a British bombardment in March 1945. The castle was completely rebuilt from 1947 to 1968.
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.