The Moorish fortress or Alcazar of Carmona rises above the Puerta de Sevilla (Gate of Seville), forming an almost impregnable defensive complex. It underwent major alterations in the 14th and 15th centuries. Theestoration work carried out between 1973 and 1975 included the refurbishing of several sections as venues for staging cultural events.
Puerta de Sevilla origin dates back to the 9th century BC. The Carthaginians created the first layout, of heavy rectangular appearance, and made it their bastion against the Romans. The Romans reinforced and restored the structure with a set of gates which is still preserved. Many interventions were carried out from the 12th century onwards.
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.