The Flavian Amphitheater is the third largest Roman amphitheater in Italy. Only the Roman Colosseum and the Capuan Amphitheaters are larger. It was likely built by the same architects who previously constructed the Roman Colosseum.
It was begun under the reign of the emperor Vespasian and probably finished under the reign of his son Titus. The arena can hold up to 50,000 spectators. The interior is mostly intact and one can still see parts of gears which were used to lift cages up to the arena floor.
In 305, the arena was the setting for the persecutions of the patron of Pozzuoli, Saint Proculus, and the patron saint of Naples, Saint Januarius. After surviving being thrown to the wild beasts in the arena, the two were beheadedat the nearby Solfatara.
The elliptical structure measures 147 x 117 meters, with the arena floor measuring 72.22 x 42.33 meters.
The Flavian Amphitheater is the second of two Roman amphitheaters built in Pozzuoli. The smaller and older amphitheater (Anfiteatro minore) has been almost totally destroyed by the construction of the Rome to Naples railway line. Only a dozen arches of this earlier work still exist.
The site of the structure was chosen at the nearby crossing of roads from Naples, Capua and Cumae. It was abandoned when it was partially buried by eruptions from the Solfatara volcano. During the Middle Ages, the marble used on the exterior was stripped, but the interior was left alone and is perfectly preserved. Excavations of the site were performed 1839 to 1845, 1880 to 1882, and finally in 1947.
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The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.