Kiruna - town on the move
Perched on the hill by the largest iron ore mine in the world, high above the arctic circle, Kiruna has to move not only housing but the city hall, the town square, the church and the station.
The mine has to expand and cracks are appearing in the town.
Competition entries are coming in for the new town centre and city hall.
Read more about moving a city and the fascination story about the mine, Kiruna, the surrounding arctic wilderness and space centre.