Silbury Hill is a prehistoric artificial chalk mound near Avebury in the English county of Wiltshire. It is part of the Stonehenge, Avebury and Associated Sites UNESCO World Heritage Site. At 39.3 metres (129 ft) high, the hill is the tallest prehistoric man-made mound in Europe and one of the largest in the world; it is similar in volume to contemporary Egyptian pyramids. The site is in the care of English Heritage.

Avebury is a village and civil parish in Wiltshire, England. The village is about 5.5 miles (9 km) west of Marlborough and 8 miles (13 km) northeast of Devizes. Much of the village is encircled by the prehistoric monument complex also known as Avebury. The parish also includes the small villages of Avebury Trusloe and Beckhampton, and the hamlet of West Kennett.