Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Fortress of Suomenlinna' has mentioned 'Island' in the following places:
Occurrence Sentence Text Source
This island, which has the greatest concentration of fortifications was renamed Gustavssvxc3xa4rd (King Gustav's sword) (fi: Kustaanmiekka) during the construction by Sweden.
Instead of using the normal Finnish postal addressing scheme (consisting of a street name and a house number), the addresses at Suomenlinna consist of a letter code for the island and then a house number.
In addition to the island fortress itself, seafacing fortifications on the mainland would ensure that an enemy could not acquire a beach-head from which to stage attacks on the sea fort.
Due to repeated Russian threats in 1749 and 1750, more effort was placed on the island fortifications at the expense of those on the mainland, so that a safe base of operations could be secured for the Swedish naval units along the Finnish coast.
After the Finnish Civil War, a prison camp existed on the island.
[13] A number of museums exist on the island, as well as the last surviving Finnish submarine, Vesikko.
In the mid-1980s, the Nordic Arts Centre was established on the island.