The amphitheatre of Carthage stands on the western edge of the ancient city, half-buried into a natural depression in the ground. It was one of the largest in Roman Africa and could hold around 30,000 spectators, though most of the upper structure was systematically dismantled in late antiquity for building stone — only the lower arcade, the arena floor, and parts of the underground service tunnels survive.
The site is now a quiet, partly grassed-over set of ruins; a small column in the centre commemorates the Christian martyrs Perpetua and Felicity, who were killed here in 203 AD during the persecution of Septimius Severus. The amphitheatre is one of the easier Carthage sites to access on foot — it sits just outside the main archaeological zone — and is rarely crowded. It is best visited together with the Circus of Carthage, just south.