The Monastery of Dumio (São Martinho de Dume), is a former paleo-Christian monastery in the civil parish of Dume, municipality of Braga, in northwestern Portugal. Originally a Roman villa, it was the base of a basilica by Suebi tribes, and later Christian monastery headed by Martin of Braga in the 6th century (c. 550–560). The re-discovery of the Roman ruins in the late 20th century resulted in archaeological excavations that unearthed its former use.
The ruins are located around the Lugar da Igreja or Lugar do Assento on the square occupied by the parochial church of Dume. Occupying a rural landscape, the space is an ample property that include the Church of São Martinho de Dume, constituted by a central nucleus of the courtyard, the chapel of Nossa Senhora do Rosário and backyard of the Casa do Assento, on the same block occupied by the local cemetery.
The archaeological ruins in Dume encompass a complex of structures that include: a grande Roman villa (with a habitational zone) and bathhouse; remnants of a granite basilica in the form of a Latin cross (oriented east to west); with regularly horizontal aligned deposits in mortar, pavement and polychromatic mosaics; and a necropolis consisting of twelve graves, located in an area defined by granite slabs and/or brick coverage. These individual spaces were occupied successively over a 2000-year period.
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.