There have been some fortifications in Lappeenranta city from the 17th century. After the defeat of Sweden-Finland in Great Northern War 1700-1721 Viborg castle and large areas in Carelia were lost to Russia. The military value of Lappeenranta, the new border city, was suddenly increased. The construction of the new bastion fortress was started immediatelly after war in 1721. It was planned to be a part of the new defence system of Finland together with Olavinlinna castle and Hamina fortress.
Russians conquered the fortress in the next war in 1741 after bloody battle. New border was moved to west and Lappeenranta was left to Russian side. Russians settled a garrison to fortress and started to enhance it in the 1750's and again in 1791-1792. After the Finnish War in 1808-1809 fortress lost its military value. After year 1810 it was used as a garrison and prison. During the Finnish Civil War in 1918 red guards were arrested and executed in Lappeenranta fortress.
Nowadays fortress has been renovated and open for visitors. The former garrison buildings are now home to the South Karelian Museum and Art Museum, artists' and craft workshops, Lappeenranta's Orthodox church and parish hall, a children's art school and a café, among others.
Eketorp is an Iron Age fort in southeastern Öland, which was extensively reconstructed and enlarged in the Middle Ages. Throughout the ages the fortification has served a variety of somewhat differing uses: from defensive ringfort, to medieval safe haven and thence a cavalry garrison. In the 20th century it was further reconstructed to become a heavily visited tourist site and a location for re-enactment of medieval battles. Eketorp is the only one of the 19 known prehistoric fortifications on Öland that has been completely excavated, yielding a total of over 24,000 individual artifacts. The entirety of southern Öland has been designated as a World Heritage Site by UNESCO. The Eketorp fortification is often referred to as Eketorp Castle.
The indigenous peoples of the Iron Age constructed the original fortification about 400 AD, a period known to have engendered contact between Öland natives with Romans and other Europeans. The ringfort in that era is thought to have been a gathering place for religious ceremonies and also a place of refuge for the local agricultural community when an outside enemy appeared. The circular design was believed to be chosen because the terrain is so level that attack from any side was equally likely. The original diameter of this circular stone fortification was about 57 metres. In the next century the stone was moved outward to construct a new circular structure of about 80 metres in diameter. At this juncture there were known to be about fifty individual cells or small structures within the fort as a whole. Some of these cells were in the center of the fortified ring, and some were actually built into the wall itself.
In the late 600s AD the ringfort was mysteriously abandoned, and it remained unused until the early 11th century. This 11th century work generally built upon the earlier fort, except that stone interior cells were replaced with timber structures, and a second outer defensive wall was erected.
Presently the fort is used as a tourist site for visitors to Öland to experience a medieval fortification for this region. A museum within the castle walls displays a few of the large number of artefacts retrieved by the National Heritage Board during the major decade long excavation ending in 1974. Inside the fort visitors are greeted by actors in medieval costumes who assume the roles of period artisans and merchants who might have lived there nine centuries earlier. There are also re-enactment scenes of skirmishes and other dramatic events of daily life from the Middle Ages.
Eketorp lies a few kilometers west of Route 136. There is an ample unpaved parking area situated approximately two kilometers west of the paved Öland perimeter highway. There is also a gift shop on site. During peak summer visitation, there are guided tours available. Visitors are assessed an admission charge.