The Caerleon amphitheatre served the legionary fortress of Isca Augusta, base of Legio II Augusta from c. AD 75 until the later 3rd century. Built around AD 90 just outside the fortress walls, it was an oval arena (roughly 56 x 41 m internally) constructed of earth banks revetted in stone, with eight entrances and an estimated capacity of around 6,000 — sufficient to seat the entire legion. Despite the brief, it was a military amphitheatre, not civilian; it underwent at least two major refurbishments in the 2nd and early 3rd centuries.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
As one of the most complete amphitheatres in Britain, it was primarily a venue for legionary training, weapons drill, and parades, alongside spectacles and possibly executions — functions that reinforced military discipline and the social cohesion of the legion. Its scale and survival make it the best-preserved Roman military amphitheatre in Britain.
Excavated by Mortimer Wheeler and Tessa Wheeler in 1926–27 under Daily Mail sponsorship — the first full excavation of any British amphitheatre — revealing the full plan, entrance passages, vaulted chambers (including a probable shrine of Nemesis at one entrance, paralleled at Chester), and seating arrangements. The site is consolidated and displayed; finds and structural sequencing remain a key reference point for comparison with the amphithe
The Caerleon amphitheatre served the legionary fortress of Isca Augusta, base of Legio II Augusta from c. It is recorded in the Pleiades gazetteer of ancient places as a amphitheatre site from the Roman period in Britain.
Caerleon Roman amphitheatre is classified as a Roman amphitheatre — a civilian site in the Pleiades ancient world gazetteer. Roman Britain's archaeology encompasses thousands of sites ranging from legionary fortresses and marching camps to villas, temples and towns.
Several Roman sites lie within a short distance, including Isca Silurum (0.3 km), Great Bulmore (2.4 km), Carrow Hill Roman fort (9.1 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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