The current church building in Govan was constructed in 1888, although the site is one of the oldest places of Christian worship in Scotland. Unusually, the axis of the church was turned to orientate north-south rather than the traditional east-west orientation, but this allowed the main door to face south to the main street. It is believed that the site's earliest Christian activity began sometime in the 6th century AD. Archaeological excavations in the 1990s uncovered two early Christian burials beneath the foundations of a later church. Despite this early activity, it wasn't until the 9th and 10th centuries that Govan Old rose to prominence.
The church now houses a remarkable collection of early Christian stones, The Govan Stones. They are an unique collection of early medieval stones carved in the 9th – 11th centuries to commemorate the power of those who ruled the Kingdom of Strathclyde. 31 monuments dating from this period include beautifully carved crosses and cross shafts, and 5 magnificent hogback stones.
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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.