At the top of the hill, on its eastern side, is a circular mound of earth, hollowed out in the center. This is the remains of a Bronze Age tumulus or round barrow, an example of a prehistoric monument that can be found all over Britain.
Round barrows were used as burial mounds from the Neolithic period (c2200 BC) right through the Bronze Age (c1000 BC) and again in the Anglo Saxon period. They may cover an individual or multiple burials and may also have been used for cremations.
Castle Acre Castle was built by William de Warenne, the Earl of Surrey, in the manor of Acre during the 1070s. William was a Norman lord who had accompanied William the Conqueror in the conquest of England in 1066; he was rewarded with extensive estates
Victorious at the Battle of Hastings on 14 October 1066, the invading Duke of Normandy, William the Conqueror, spent the rest of the year securing his holdings by fortifying key positions. He founded several castles along the way, but took a circuitous route toward London;
Roman Baths (Bath) – The first shrine at the site of the hot springs was built by Celts, and was dedicated to the goddess Sulis, whom the Romans identified with Minerva. The name Sulis continued to be used after the Romans arrived in Britain,
The first castle on the Castell Coch site was probably built after 1081, during the Norman invasion of Wales. It formed one of a string of eight fortifications intended to defend the newly conquered town of Cardiff and control the route along the Taff Gorge.