Schlierbach Abbey is a Cistercian monastery founded in 1355, and rebuilt in the last quarter of the 17th century. The original foundation was a convent for nuns, abandoned around 1556 during the Protestant Reformation. The abbey was reoccupied as a monastery in 1620, and rebuilt in magnificent baroque style between 1672 and 1712. The monastery again went into decline with the upheavals before, during and after the Napoleonic era. It recovered only towards the end of the 19th century.
In the 20th century the abbey established a viable economy based on a glass works, school, cheese manufacturing and other enterprises. The abbey is open to visitors, who may take tours, attend workshops and dine at the monastery restaurant.
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.