The Church of the Three Crosses (Vuoksenniska chruch), designed by academician Alvar Aalto, is architecturally an interesting building. Its slender, high belfry describes a down shot arrow. Instead of the altar painting there are three crosses. Among the 103 windows only two are identical. Aalto planned the church also for other activities in the parish besides services. Therefore the church can be divided into three parts. In the church there are seats for 800 persons. The windows and lightning are high up, which creates fascinating display of light and shadow. The Church of the Three Crosses was completed in 1957. The stained glass on the ceiling is as old as the church and also designed by Alvar Aalto.
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.