The Colonne di San Basilio (Columns of St Basil) are an ancient Greek structure, which take their name from the mountain of San Basilio where they are located, in the territory of Lentini.
The summit of the mountain shows trances of ancient settlement from the prehistoric period, with clear traces of the postholes of a hut, probably belonging to the Casteluccio culture.
A little way away is the imposing structure itself, carved in the limestone rock and measuring 18 x 16 metres, with 32 columns designed to support rock slabs. Part of the structure has collapsed, but many of the columns remain standing.
The structure was later reused by the Byzantines, who converted it into a church. Some traces of religious frescoes are even visible on some of the columns, but they are not legible.
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.