Aboa Vetus (Old Turku) is a museum of archaeological history. Originally, plans were for only Ars Nova, the contemporary art museum, but during its construction a number of structures and artifacts dating back to the Middle Ages were discovered, and the archaeological excavation that was commissioned eventually transformed into Aboa Vetus. The two museums were combined in 2004.
The ruins excavated in the Convent Quarter originate from the Middle Ages. In the midst of these ruins, museum visitors progress through the permanent exhibition, which focuses on the 15th century. The artefacts on display originate from the excavations carried out in the town quarter where the museum actually sits.
Reference: Aboa Vetus & Ars Nova
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.