Twelve of these hangars were built by the French army during World War I. They were used for the maintenance of airships. Today, the Hangar in Écausseville, near Cherbourg, is the only one left. The 150 metre-long and 30 metre-high building can be visited during the summer months, and is also used for quirky Aéroplume fights: an airship with fluttering wings piloted by an individual performer. It's something out of the world of Jules Verne and is really worth a try!