Haltdalen Stavkirche is a wooden church from 1170. During its long existence it has been dismantled several times for repairs, yet there are many original parts, more than 800 years old.
The walls of the church form a kind of wall rather than a wall, followed by a gap of about a metre and the inner part of the church is as if built inside. This helps to insulate the interior against the cold, but it also helps to ventilate the space and the wood well and thus protect it.
Since 2000, Iceland has had a replica of this church. It can be found on the island of Heimaey (Vestmannaeyjar archipelago) and is called Stafkirkjan.