Enniskillen Castle is a historic fortress located in Enniskillen, Northern Ireland. Built in the 16th century, it served as a stronghold for the O'Donnell clan and later became a military barracks. The castle is situated on the banks of the River Erne, providing strategic views of the surrounding area. Today, Enniskillen Castle houses the Fermanagh County Museum and the Enniskillen Castle Museums. Visitors can explore its well-preserved structures, including the keep and the gatehouse, while learning about the region's history and heritage. The castle is a popular tourist attraction, offering insights into Ireland's past.