Submerged under the sea for over a thousand years, two lost cities of ancient Egypt were recently rediscovered. Their story was told for the first time in this blockbuster exhibition at the British Museum. We worked with Paris-based architects Sylvain Roca and Nicolas Groult, lighting designers Studio ZNA and construction specialists Factory Settings to realise this epic 5-star exhibition. Pictures courtesy of the Trustees of the British Museum. Object photography Christoph Gerick © Franck Goddio/Hilti Foundation.