The complex consists of Dolmens in Valencia de Alcántara consists of more than 40 dolmens. The most famous of the dolmens is the so-called “El Mellizo” in the little village of Aceña de la Borrega.
This megalithic area is among the largest in Europe. The stone structures are funerary constructions from the Neolithic and Chalcolithic periods, which spanned between the third and fourth millennium BC. At the site, archaeologists have found individual and group burials, as well as funerary goods such as ceramics, ornaments, arrowheads, axes, carvings, and anthropomorphic idols.
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.