Built in the late first century BC, the Villa of Naniglio reached its maximum splendour in the third century AD. The main attraction of the villa is a huge, well preserved water reservoir, comprised of a central nave and two lateral aisles.
The Naniglio is an underground structure consisting of a central nave and two side aisles, with a ceiling made of crossed vaults supported on eight square columns arranged in two rows. This structure is so well preserved that it is possible to fully appreciate its characteristics and architectural quality. At the ends of the reservoir, in fact, are two rooms with multi-coloured mosaic floors featuring geometric patterns and walls covered with plaster.
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.