The £12.3 million project at the Royal Air Force Museum near Wolverhampton houses 13 Cold War planes, including the enormous V-shaped Vulcan bomber and others with wingspans of almost 50 metres.
According to the practice, the design 'gives physical expression to the two opposing forces locked in the Cold War.'
'Two curvilinear triangular volumes are forced 30m up out of the ground creating a 130m-long fault line along their adjoining edges with the metaphor continued in the twisted plane geometry of the roof spine.'
FCB was handed the job to design the extension to the museum's existing facilities back in 2003, but the scheme was only given the green light later the following year after landing a cash injection from the European Regional Development Fund (AJ 11.11.04).
The building is due to be opened officially by HRH Princess Anne on 7 February.