Tretten church is build in 1728. It is a cross shape building made of lumber. Original it did not have a church tower, the tower was added to the building in 1807. It hasalways been problems with the construction and in 1819 was the last time they used the large church bell. When they rang the bell, the tower fundament gave in and it became a hazard to swing the largest church bell. It has been tried may times to make the tower fundament stronger but with no luck.
In 1999 they had to close the church since they feared the whole roof and tower could fall down. In 2000 the old tower was taken down and set beside the church, and the church building got a temporary roof. Over the last few years several solutions have been discussed and it seems now they decided to construct a new tower in shape like the original one.