Finland was a part of Sweden until 1809, and the national parish of the Finnish Church was established in Stockholm in 1533, at the time accommodated in the old abbey of the Blackfriars. A building constructed on the present site 1648-1653, originally intended for ball games, and thus called Lilla bollhuset ('Small Ball House'), but mostly used as a theatre, was taken over by the Finnish parish in 1725 from when the irregularly shaped building stems. In the interior, the organ loft still resembles the gallery of the old Boll House. As the church never had an accompanying graveyard, the Church of Catherine on Södermalmwas of great importance to the Finnish parish until the 19th century.
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.