Bad Honnef, Germany
c. 1200
Düren, Germany
12th century
Wachtberg, Germany
13th century
Herbede, Germany
1354
Warburg, Germany
11th century
Dahlem, Germany
13th century
Stromberg, Germany
12th century
Wachtberg, Germany
1337/1659
Bad Berleburg, Germany
13th century
Schieder-Schwalenberg, Germany
1228-1231
Velen, Germany
15th century
Euskirchen, Germany
11th century
Dortmund, Germany
13th century
Nümbrecht, Germany
11th century/1635
Mechernich, Germany
14th century
Hückeswagen, Germany
c. 1189
Vlotho, Germany
c. 1250
Wissen, Germany
12th century
Hachen, Germany
c. 1000 AD
Castrop-Rauxel, Germany
13th century
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.