Newbury Castle is a historic site located in Newbury, England. Originally built in the 11th century, it served as a defensive structure during the Norman Conquest. The castle was constructed by William the Conqueror and played a significant role in local governance and military strategy. Over the centuries, the castle fell into disrepair and was eventually dismantled. Today, only remnants of the structure remain, including earthworks and some stone foundations. The site is a popular spot for visitors interested in medieval history and offers insights into the region's past.