Korsør Fortress is a historic military fortification located in the town of Korsør, Denmark. Built in the late 16th century, it was designed to protect the entrance to the Great Belt, a vital waterway for maritime traffic. The fortress features impressive stone walls and bastions, reflecting the architectural style of its time. Over the years, Korsør Fortress has played a significant role in Denmark's defense strategy. It was involved in various conflicts, including the Danish-Swedish Wars. Today, the fortress stands as a cultural landmark, attracting visitors interested in Denmark's military history and heritage.