Carrickfergus Castle is a historic fortress located in Carrickfergus, Northern Ireland. Built in the 12th century, it is one of the best-preserved medieval castles in the region. The castle has played a significant role in various conflicts throughout its history, including battles against the Normans and English forces. The castle features impressive stone walls and towers, offering stunning views of Belfast Lough. Today, it serves as a popular tourist attraction, allowing visitors to explore its rich history and learn about the medieval life of the time. Guided tours and exhibitions are available for those interested in its past.