Extreme Constructions

The Suez canal took 10 years to build, bridging the North Atlantic with the Indian Ocean.

More than a century old, Paris' metro is the beating heart of the city. With its 220 km of rail, 302 stations and 13 lines, the metro transports more than five million people every day. The Parisian Metro tested many construction methods: wooden tunnels, boring machines, shields, ground freezing systems, steel viaducts and submerged chambers in the Seine.

315 metres long, 65 metres high, weighing 80,000 tonnes and capable of transporting more than 7,000 people, the Meraveglia is the ultimate cruise ship. But how was she built? We followed her development at the St. Nazaire construction site, a building ground for the world's biggest vessels.