Santiago Calatrava is an architect, artist and engineer whose international reputation for building was first established through his dazzling bridges, which have come to define many cities around the world. In Venice he controversially created the first new bridge for 70 years and only the fourth ever to have spanned the Grand Canal. He has built all over the world and his evocative, uncompromising, ambitious and exciting architecture has uplifted many people and left others outraged. He talks to Razia Iqbal and an audience at the Royal Institute of British Architects in London.

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