History of the site

The site at Silchester has been inhabited since at least the first century BC. The timeline below runs through some of the key points in the site's history from then until the present day.

Iron age

First century BC

The oppidum of Calleva is founded. The Iron Age town extended over 32.5 hectares (71.5 acres) and was surrounded by defensive ditches and ramparts. Occupation in Insula IX began around 20 BC.


The Roman army, led by Emperor Claudius, conquer Britain. Calleva continues to be developed as a Roman town and takes on the epithet 'Atrebatum' which denotes the town's role as the capital for the Atrebates tribe.

Roman Britain

First century AD

From the second half of the century, the Roman influence on the town was increasingly visible. The Iron Age street plan was replaced with the Roman grid, with streets running at right angles to form distinct blocks or 'insulae'. The forum basilica was built at the centre of the settlement and other public buildings began to appear, such as the baths and the amphitheatre. Workshops and shops began to spring up to provide the inhabitants with goods and services.

Second century AD

The Roman town developed further. Private homes began to be decorated with elaborate mosaics. The first Roman defences were also built during this time, comprising a rampart and ditch.

Third century AD

The Roman town walls at SilchesterThe massive stone wall that encircles the Roman town was built. Much of the wall still exists today, and can be visited throughout the year.

Many buildings were demolished and rebuilt along new boundaries that followed the Roman street grid, rather than the old Iron Age street plan.

Fourth century AD

The town continued to flourish, but new buildings were more modest in their size and decoration than during the early Roman period.

Fifth to sixth century AD

At some point during the fifth or sixth century, wells seem to have been deliberately filled in and the town largely abandoned. A small column inscribed with ogham writing was found in one of the wells. The reason the town was abandoned is still unknown, but may be related to the rise of nearby Winchester as the capital of Anglo-Saxon Wessex.

Discovery of the Eagle


The Reverend J.G. Joyce, who was the rector of nearby Stratfield Saye excavated the site between 1864 and 1878. In 1866, he uncovered the famous Silchester Eagle buried in the forum basilica.


The site at Silchester was first excavated by the Society of Antiquaries of London. This twenty year project aimed to excavate the whole Roman town and led to the development of a plan of all the stone buildings on the site, which is still used today.

Read about the modern excavations: the Town Life Project

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