Loring Air Force Base Arch Hangar

The Loring Air Force Base Arch Hangar is an arch hangar located at Loring International Airport in Limestone, Maine. It was constructed by the United States Air Force as part of Loring Air Force Base. It was constructed at the same time as the base's double cantilever hangar, and was one of the largest monolithic arch structures in the world at the time of its completion.