The Roman Amphitheatre of Montecassino, in Cassino (province of Frosinone), was built in the 1st century BCE by the noblewoman Ummidia Quadratilla.
Surrounded by vegetation, it has an almost circular shape – unique for Roman amphitheatres – and measures 85 x 69m, with 18.5m high perimeter walls in opus reticulatum. There are 5 arched entrance ways and the upper part has shelves with holes to hold the supports for a roof covering. As with other structures of this sort, it is likely that the amphitheatre was used for gladiator games, fights to the death which often also featured wild beasts.
It is located in the archaeological area of Cassino on the road that links the city centre to the Abbey of Montecassino and also features the museum, theatre and the Mausoleum of Ummidia Quadratilla. Part of the amphitheatre is still used for exhibitions and shows.