In Pictures: World's 'most beautiful' airport terminals

British national daily newspaper 'The Guardian' has curated pictures showcasing the beauty and design ingenuity of airport terminals across the world, as shown in photography book 'The Art of the Airport'. The gallery features pictures of the Shenzhen Bao'an International Airport, China, which has a footfall of 32.3 million passengers a year and the Wellington International Airport in New Zealand.