Trolleholm Castle (Trolleholms slott) was originally named Kattesnabbe and later Ericholm. It has been known since 1424, and was a monastic estate in the late Middle Ages. Trolleholm belonged to members of the Thott family (1533-1680) and Trolle family (1680-1806). Frederik Trolle (1693-1770) gave it its present name in 1755. The castle was reconstructed in the 1760s according the design of Carl Hårleman. The present appearance date from the late 19th century, when Trolleholm was renewed in the early Renaissance style.
During 1806 was the estate by inheritance to the family, who still owns it. The holder of the estate carry the family name Trolle-Bonde. The estate comprises 110 houses and a total of 62,800 acres (254 km2). There is a very valuable library including 40,000 books. The great garden is open to the public.
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.