The largest traditional self-supporting domed igloo had an internal diameter of 7.36 m (24 ft 2 in) and an internal height of 3.81 m (12 ft 6 in) and was constructed by 29 employees of the Hydro-Quebec LG-3 power station. It was constructed at the power station in Quebec, Canada, and was completed on February 22, 2005 after 18 days of work.