The construction Haga Church (Hagakyrkan) began in 1856 and it was finished in 1859. The church and the pulpit were designed by architect Adolf W. Edelsvärd. The church represents the Gothic revival architecture style.
The first organ was installed in 1861 by the Danish firm Marcussen & Søn for the price of 20 000 Swedish crowns. It was rebuilt in 1911 (pneumatic action) and 1945-1951 (electric action) by the Magnusson organ building firm. It was restored to close to original condition 2002-2004 by Åkerman & Lund.
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.