Inside Zaha Hadid Architects’ $12.5 billion plan to build Africa’s largest airport and its Great Rift Valley-inspired terminal garden

A slice of Ethiopia’s Great Rift Valley, complete with volcanic rocks, native trees, streams and grass, will run through Africa’s planned largest airport, while a high-speed railway carries travellers in and out of Addis Ababa through a terminal that evokes the futuristic spacecraft in Morten Tyldum’s Passengers.