Eketorp is an Iron Age fort in southeastern Öland, Sweden, 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.