Spøttrup Castle is the best preserved medieval castles in Denmark. The first record of the castle dates from 1404 when it was moved to the possession of Viborg bishop. Bishops built the castle in the 1400s and it was restored in 1525. It consisted of square form castle and two surrounding moats with a drawbridge.
Skipper Clement, leader of the peasant rebellion, attacked to the castle during the so-called Count's Feud (civil war 1534-36). After Reformation the Spøttrup was reduced to the Crown until sold to Henrik Below in 1577. Since the 18th century Spøttrup moved to the hands of several families and it slowly decayed. The restoration started in the early 20th century and in 1941 the castle was opened to the public as a museum.
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.