Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Fortress of Suomenlinna' has mentioned 'Tunnel' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| For the general public, Suomenlinna is served by ferries all year, and a service tunnel supplying heating, water and electricity was built in 1982. | WIKI |
| In the beginning of the 1990s, the tunnel was modified so that it can also be used for emergency transport. | WIKI |