The Castle of Lanjarón, locally known as the Moorish Castle, is a small medieval fortress located a quarter mile from the village. It is dominating on a rocky outcrop, the valley of the Lanjarón River, next to the Salado canyon. It is formed by two enclosures with some small sections of the outer wall. Signs of a tower are preserved; a bastion square, masonry at its bottom and above a adobe. At the south of the complex is an underground cistern, covered with a vault of brickwork.
Lanjarón castle was built between the 13th and 16th centuries in the late Moorish age and restored by Christians later.
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.