Square keep castles were built from the 11th to the 13th century.
Why were square keep castles built?
Square keep castles were built as defensive fortifications. They were typically constructed on high ground, with thick walls and towers to withstand attacks from enemies. The square shape of the keep also made it easier to defend, as it allowed the defenders to have a clear view of all sides.
In the 11th century, the Normans introduced the square keep castle to England. They were quick to recognise the advantages of this design, and soon square keeps were being built all over the country. The square keep castle also became a popular design in other parts of Europe, including France, Germany and Italy.
Square keep castles were eventually replaced by more sophisticated designs, such as concentric castles and tower houses. However, they remained an important part of medieval military architecture for many centuries.
