Valeggio Castle, situated on tall spurs overlooking the River Mincio, bears the typical characteristics of a Della Scala castle, even if it was most probably built on a pre-existing structure. The Scaligeri family realised its strategic importance and erected a castle featuring the typical massive walls, square towers, battlemented keep, draw-bridge and passage guarded by a tower which is shorter than the others. The castle, built in the 13th and 14h centuries, was in full use until 1500, after which it was abandoned once it had lost its strategic importance.
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.