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.
The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.