Albania is a country of bunkers.

An excerpt from the article 25 facts about Albania

There are several hundred thousand shelters, commonly known as bunkers. They were built between 1972 and 1984. The decision to fortify the state was made at the 12th Plenum of the Central Committee of the Party of Work of Albania in 1971.

Currently, there is a "Concrete Mushrooms" campaign encouraging the use of shelters.