The Mail & Custom’s House is rare and historically significant building in Eckerö. It was designed by famous Finnish architects C.L. Engel and C. Bassi and completed in 1828. The purpose of the building was to indicate the power of Russian Empire to seafarers coming from Sweden and it was built intentionally too large for the custom and post office need.
The Mail & Custom's House is well preserved. Today it functions as the post museum and there are temporary exhibitions.
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.