Carlisle Castle is a historic fortress located in Cumbria, England. Built in the 11th century, it has served various roles, including a military stronghold and a royal residence. The castle's strategic position near the border with Scotland made it crucial during conflicts between the two nations. The castle features impressive stone walls and a distinctive keep, which is the central tower. Over the centuries, it has witnessed numerous battles and sieges, reflecting the turbulent history of the region. Today, Carlisle Castle is a popular tourist attraction, offering visitors a glimpse into medieval life and architecture.