Therea re two castles in Erice, Pepoli Castle, with foundations dating from Arab times, and nearby Venus Castle, dating from the Norman period. Surrounded by a lush park, the hilltop castles alone are worth a stop in Erice, which offers charming old stone streets and several medieval churches. Pepoli Castle was at first a feudal stronghold, though Erice was eventually ceded to the Crown as a demesnial city. The view from the castle towers is stupendous. Though both castles have been modified somewhat over the centuries, they still have that distinctively medieval character one expects of such fortresses. Pepoli Castle is now a hotel.
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.