Built around the 2nd century AD, the Albenga amphitheater is still the only building of this kind known in the Riviera di Ponente.
According to the portions of the wall that re-emerged in the excavations of 1973/75, it is believed that it had an elliptical plan of about 72.80 meters for 52.20 and that it could contain a few thousand spectators.Probably used only for gladiatorial shows, in history it was the scene of the most diversified events: it was used as a burial place in the Middle Ages and saw two small bunkers used by German troops to control the war in the middle of its arena.
References:The Citadelle of Quebec is an active military installation and official residence of both the Canadian monarch and the Governor General of Canada. It is located atop Cap Diamant, adjoining the Plains of Abraham in Quebec City. The citadel is the oldest military building in Canada, and forms part of the fortifications of Quebec City, which is one of only two cities in North America still surrounded by fortifications, the other being Campeche, Mexico.
The first fortifications in Quebec were built by the Governor General of New France Louis de Buade, and completed just in time for the Battle of Quebec in 1690.
After the British conquest in the second half of the 18th century, the problem of Quebec City's defences grew more acute.