Quarried out of the natural bedrock, The Temppeliaukio church is one of the most popular tourist attractions in the city; half a million people visit it annually. The interior walls are created naturally by the rock. The church was designed by architects Timo and Tuomo Suomalainen and opened in 1969. The interior was excavated and built into the rock but is bathed in natural light entering through the glazed dome. Due to its excellent acoustics the church is a popular venue for concerts.
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.