Around 3km east of the centre of Leptis Magna (you'll need to get here by car), the evocative amphitheatre once held 16,000 people and was hollowed out of a hill in the 1st century AD. The upper stalls may have once been encircled by a colonnaded portico. Note that as the amphitheatre is separated from the main site, you'll have to pay an additional entry (fine) and camera (excessive) charge. There's a model replica of the amphitheatre in Room 10 of the Leptis Museum.