Corullón Castle dates from 15th century. Its tower was copied to build a similar one in Tuscany (Italy). Today, the tower and the surrounding ruins are still preserved. The best place which has been preserved is the Tower of Homage. On its entry point, two armorial bearings mark both houses, Osorio´s House and Valcarce´s House. It is a squared tower with three storeys, separated by imposts, battlements, modillions, meurtrières, and the remains of a great nave in tree sections. Its construction is from 15th century and it belonged to Alvarez Osorio until 1486, and then to Álvarez de Toledo.
Currently, the castle belongs to the Marquises of Villafranca´s descendants who restored it some years ago.
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.