The iconic Brabazon hangars have been a part of Bristol's heritage since the 1940s.
But almost 70 years since it was first built following the Second World War many Bristolians have probably never stepped foot inside.
Most of us will know of someone - mother, father, grandfather - who would have worked at the hangars in the six decades it was operational.
Built in 1946 for the construction of the Brabazon airliner, the building later became the birthplace of Concorde.
It had been empty since 2009 but could soon be welcoming tens of thousands of visitors at once if plans to transform the hangar into a 16,000-seat arena are approved.
Malaysian investment firm YTL revealed its vision for an arena at the site in Filton last year and will soon be holding public tours of the hangars.