Blackness Castle is a 15th-century fortress on the south shore of the Firth of Forth. It was built, probably on the site of an earlier fort, by Sir George Crichton in the 1440s. At this time, Blackness was the main port serving the Royal Burgh of Linlithgow, one of the main residences of the Scottish monarch. The castle, together with the Crichton lands, passed to James II of Scotland in 1453, and the castle has been crown property ever since. It served as a state prison, holding such prisoners as Cardinal Beaton and the 6th Earl of Angus.
Strengthened by Sir James Hamilton of Finnart in the mid-16th century, the castle became one of the most advanced artillery fortifications of its time in Scotland. A century later, these defences were not enough to prevent Blackness falling to Oliver Cromwell's army in 1650. Some years after the siege, the castle was repaired, and again served as a prison and a minor garrison. In 1693, the spur protecting the gate was heightened, and the Stern Tower shortened as a base for three heavy guns. Barracks and officers' quarters were added in the 1870s, when the castle was used as an ammunition depot, until 1912. The castle was briefly reused by the army during World War I. It is now a Scheduled Ancient Monument, in the care of Historic Scotland.
The castle stands on a rocky spit in the Firth of Forth, and is oriented north-south. The castle comprises a curtain wall, with integrated north and south towers, and a separate central tower in the courtyard. To the south-west, a defensive spur forms the main entrance, while a water gate to the north-west gives access to the 19th-century pier. Outside the walls are 19th-century soldiers' barracks and officers' quarters. The castle is said in popular legend to have a ley tunnel linking it with the House of the Binns, which lies about 3.1 km to the south.
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.