Norwich Castle is a historic castle located in Norwich, England. Built in the 11th century, it was originally constructed as a royal palace and later served as a military stronghold. The castle features a distinctive round tower and is made from local flint and limestone, showcasing Norman architecture. Today, Norwich Castle is home to the Norwich Castle Museum and Art Gallery, which displays a variety of artifacts, including fine art, archaeology, and natural history. The castle is a popular tourist attraction, offering visitors a glimpse into the region's rich history and heritage.