The hill fort is located to the rock hill with high cliffs in Pisamalahti. The hill fort rises about 55 meters above Enovesi lake.
First record of the fort dates back to the year 1561, but it was probably built in the Iron or Middle Ages. According one hypothesis it was built by Carelian people against conquerors from Tavastia (Häme) historical province. There is a 120 meters long and 2-3 meters high stone wall on the top of the hill.
Pisamalahti hill fort is one of the most valuable ancient fortresses in Finland. The hill and the surrounding lake landscape are popular tourist attraction in the Sulkava area.
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.