Mega Builders - Season 4

The Hard Rock Café is financing a $400m rock and roll theme park in South Carolina, the first in the world. What began as a whim soon turns into a very expensive reality.

The world's biggest cargo ship, being built in Denmark, has only 45 days to be completed. Will the crew make it in time?

Can engineers make 6,000-ton concrete pontoons float? That's the only way to construct this astonishing bridge in Canada, but can they pull it off?

MGM builds a 31-hectare mini city in Las Vegas, the largest privately-finances project in North America.

Seoul needs a direct link to its island airport. This involves building one of the most ambitious bridges in the world, spanning almost 13km of water.

In Norway, engineers aren't satisfied with building the world's largest oil rig; so they're constructing two. Watch this incredible engineering feat unfold.

A plan to install 78 massive gates across the three inlets into Venice's lagoon may be the city's only saviour. See the mammoth project take shape.