Oscar Niemeyer's Forgotten Masterpiece

In the Lebanese city of Tripoli there is an exceptional architectural site which has never been used. The great modernist architect Oscar Niemeyer designed all the buildings for an international fair which was about to open when civil war broke out in the 1970s. Architect Wassim Naghi has been speaking to Nidale Abou Mrad about the fair.Photo: The Tripoli international fair from above. Credit: BBC.