Santo Tomé el Viejo Church was built outside the walls in the mid-12th century opposite the Gate of El Peso de la Harina (which was opened up in the 16th century when the Gate of El Obispo was closed).
Built in Caleno granite, besides some of its interior elements, it conserves the 12th-century east and south entrances, with their semi-circular arches and archivolts set on columns on the west porch and on the fascia of the capitals to the south; they boast a declaration made up of figurative, plant and geometric motifs. In 1520, the apses were removed from the upper end, together with the arches that separated the naves (replaced by columns forming two large arches on each side) and the layout was reduced to one rectangular nave.
Besides its function as a church, this Romanesque building has had many uses. After the sale of church land ordered by Mendizábal, it became a private building and was used as a garage and petrol station until 1960, when it was acquired by the State. It was designated a National Monument in 1963. It is currently an annex of the Provincial Museum and is used as a storage area for stone archaeological items; it is also open to the general public.
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.