St Silin's Church is a parish church in Llansilin. The present building, which has parts dating back to the 13th century, is a Grade I listed building. It stands on a site that has been used by Christian communities since the Dark Ages. The church is dedicated to Saint Silin, now better known as Saint Sulien, the 6th-century founder-abbot of a monastery at Luxulyan in Cornwall.
The church was constructed out of wood in a cruciform shape as a Clas, though it was damaged during Owain Glyndŵr's rebellion and the nave was rebuilt in stone. A 13th-century lancet remains a part of the current building. During the English Civil War, Oliver Cromwell's Roundheads used the church as a barracks and the south door for target practice with muskets. It was also shot at by Royalist forces sieging the church; the door is still in use and still retains the bullet holes. The wooden spire of the church burned down in the 1800s and a replacement stone tower was built in 1832.
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.