The prominent grassy mound on New Road, known as Castle Mound, is one of Oxford's oldest significant landmarks, dating back to 1071 when William the Conqueror established a motte-and-bailey castle within the existing Saxon town walls. This earthwork, rising impressively to about 20 metres (60-64 feet), initially supported a wooden palisade before stone fortifications, including a keep, were added by the Norman constable Robert D'Oilly. Today, the mound itself remains, offering a tangible connection to Oxford's Norman conquest and the strategic importance of this site overlooking the River Thames. Although the original keep is gone, a 13th-century well chamber still exists beneath the mound's summit.
While the mound itself is a key feature, it is part of the larger Oxford Castle and Prison complex. Visitors can ascend the winding path to the top of the mound for unique panoramic views of the city and its famed spires. The site has witnessed nearly a millennium of history, including a dramatic siege involving Empress Matilda during the Anarchy. Over centuries, the castle evolved, serving as a royal stronghold, a centre for county administration and justice, and eventually, a prison that operated until 1996. The area now hosts a heritage attraction where you can explore remaining medieval structures like St George's Tower, descend into the crypt, and learn about the lives of former inmates.
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