The Abbazia del Cerreto is a former Cistercian monastery in the town of Abbadia Cerreto. The town is named after the abbey. The building now functions as a parish church.
The original monastery, with surrounding territory, was founded by the Benedictine order, but in 1139, the monks at the institution identifed themselves as Cistercians. By 1500, the monastery had been reduced to a few members, and the abbey church was converted into a parish church. In 1700, the monks abandoned the abbey to local priests. In 1801, the Napoleonic government expropriated all the goods and sold them to the marchese Giorgio Teodoro of principi Trivulzio.
References:The Amphitheatre of the Three Gauls was part of the federal sanctuary of the three Gauls dedicated to the cult of Rome and Augustus celebrated by the 60 Gallic tribes when they gathered at Lugdunum (Lyon). The amphitheatre was built at the foot of the La Croix-Rousse hill at what was then the confluence of the Rhône and Saône.
Excavations have revealed a basement of three elliptical walls linked by cross-walls and a channel surrounding the oval central arena. The arena was slightly sloped, with the building"s south part supported by a now-vanished vault. The arena"s dimensions are 67,6m by 42m. This phase of the amphitheatre housed games which accompanied the imperial cult, with its low capacity (1,800 seats) being enough for delegations from the 60 Gallic tribes.
The amphitheatre was expanded at the start of the 2nd century. Two galleries were added around the old amphitheatre, raising its width from 25 metres to 105 metres and its capacity to about 20,000 seats. In so doing it made it a building open to the whole population of Lugdunum and its environs.