The Artillery Museum of Finland is a special military museum dedicated to the history of the artillery from the 15th century to the present day. It was located in Niinisalo from 1977 to 1997 and in 1997 relocated to Hämeenlinna.
There are almost a hundred guns, grenade launchers and rocket launchers of different make from 13 different countries. The gun collection of the museum is unique, the most comprehensive in the Scandinavia. As far as it is known there is no other museum outside Russia with a collection on Russian and Soviet artillery equipment as exhaustive as this.
The buildings of museum, Linnankasarmi, date back to the Russian regime, to the Autonomy 1809–1917. The construction of the barracks started in 1850 and was completed in 1913. The archaeological committee values Linnankasarmi quite highly as a traditional military area and prehistoric site because the medieval town of Hämeenlinna has once been here and its remains are still under the barrack yard. More over, Häme Castle is right next door and its century's long tradition includes also artillery.
Reference: Wikipedia
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.