Christo talks about the process and difficulties of getting permission from the authorities to make artworks, comparing it to playing poker. Christo and his wife Jeanne-Claude's public interventions have included wrapping two-and-a-half kilometres of coast and cliffs up to 26 metres high in Little Bay, Sydney, and covering the Reichstag in Berlin with 100,000 m2 of fireproof polypropylene fabric.