The Church of Saint David in Llywel is said to have been dedicated to three saints: David, Darn (Paternus), and Teilo; and known as Llantrisant. Its name was changed when it was granted to the Chapter of Saint David sometime between 1203 and 1229. The nave and chancel date to around 1480, but the tower is slightly earlier. Though the body of the church was restored by Sir George Gilbert Scott in 1869, what we see is almost entirely a product of the 15th century and earlier.
The church displays Perpendicular Gothic architecture. The grave of the writer and preacher David Owen (Brutus) is in the churchyard. As well holding a copy of the famous Llywel Stone, the Church holds the original Aberhydfer stone and old village stocks.
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.