The church of St. Olaf was built in the year 1782 and is located in the place of an old chapel built in 1663. The shrine of Yläne is a combination of a cruciform church and a basilica, and is seated for 600 people. It was designed by Mikael Piimänen. The organ of the church is one of the oldest in Finland. The church site, cemetery and near vicarage are defined as national built herigate by National Board of Antiques.
Reference: Loimaanseutu.fi
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.