The church and monastery of San Vittore al Corpo was built by the Olivetan order in the early 16th century. The site once had a 4th-century basilica and mausoleum that once held the burials of the emperors Gratian and Valentinian III. The basilica was enlarged in the 8th century to house the relics of the saints Vittore and Satiro. A Benedictine monastery soon was attached to the church. In 1507, the monastery was transferred to the Olivetans, who began a major reconstruction.
During the Napoleonic wars, the site became a military hospital, and afterwards became barracks. It suffered damage during the bombardments of 1943. The monastery now houses a museum of science. Reconstruction of the church was begun in 1533 by Vincenzo Seregni, and completed in 1568 by Pellegrino Tibaldi. La façade remains incomplete. The dome was frescoed in 1617 by Guglielmo Caccia. In the chapel of St Anthony is a 1619 canvas by Daniele Crespi (Death of St Paul the hermit). In the transept on the left, is an early 17th-century cycle of canvases of the Stories of San Benedetto, by Ambrogio Figino while the right transept has an altarpiece by Camillo Procaccini. Other chapels have paintings by Pompeo Batoni and Giovanni Battista Discepoli.
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.