Duncannon Fort is a historic military fortification located in Duncannon, County Wexford, Ireland. Built in the 16th century, it was designed to protect the entrance to the River Barrow and the surrounding area from potential invasions. The fort features thick stone walls and a strategic position overlooking the water, making it an important defensive structure throughout its history. Over the years, Duncannon Fort has served various military purposes, including as a garrison and a coastal defense site. Today, it is a popular tourist attraction, offering visitors a glimpse into Ireland's military past and stunning views of the surrounding landscape.