Nesebar, Bulgaria
8th century BCE
Veliko Tarnovo, Bulgaria
12th century
Belogradchik, Bulgaria
14th century
Kavarna, Bulgaria
14th century
Ivanovo, Bulgaria
11th century
Sofia, Bulgaria
16th century
Shumen, Bulgaria
7th century AD
Veliki Preslav, Bulgaria
9th century AD
Provadia, Bulgaria
10th century AD
Silistra, Bulgaria
1841-1853
Veliko Tarnovo, Bulgaria
12th century
Tervel, Bulgaria
6th century AD
Sevlievo, Bulgaria
10th century AD
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.