Brockley Castle is a historic site located in Northumberland, England. It was built in the 12th century and served as a defensive structure during the medieval period. The castle features typical elements of Norman architecture, including thick stone walls and a central keep. Today, Brockley Castle is a ruin, but it remains an important part of England's heritage. Visitors can explore the remnants of the castle and enjoy the surrounding landscape, which offers a glimpse into the region's rich history and the life of its former inhabitants.