The Mont Saint Michel Abbey is located within the city and island of Mont-Saint-Michel in Lower Normandy, in the department of Manche. The abbey is an essential part of the structural composition of the town the feudal society constructed.
Suomenlinna or Sveaborg, until 1918 Viapori, is an inhabited sea fortress built on six islands and which now forms part of the city of Helsinki, the capital of Finland.
Olavinlinna is a 15th-century three-tower castle located in Savonlinna, Finland. It is the northernmost medieval stone fortress still standing.
An aurora, sometimes referred to as a polar light or northern light, is a natural light display in the sky, predominantly seen in the high latitude (Arctic and Antarctic) regions.
Hämeenlinna is a city and municipality of about 68,000 inhabitants in the heart of the historical province of Häme in the south of Finland.