Korsholm Castle was a medieval castle in Vaasa. It was probably built in the 1370s and the oldest record dates back to 1384 (the testament of Bo Jonsson Grip, where the castle was called as Krytzeborg). The castle was originally built to a small island and it was surrounded by a moat and two walls. The castle itself was probably built of wood.
In the Middle Ages Korsholm was a property of several nobles. The most famous of them was Sten Sture the Older. In 1748 the new governor house was built to the site and all medieval structures were demolished. The next house was built in 1851 but it was destroyed by the great fire of Vaasa in 1852. Today a low mound is all that remains of the castle. There is also a monument dedicated to the castle.
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.