MegaStructures Season 9 Episode release dates & where to watch

1. London's Olympic Stadium

2. Dubai's 5-Star Racecourse

Built in the middle of the desert, the new Meydan racecourse will define raceday luxury. But will it be finished in time for the Dubai World Cup?

3. Britain's New Railway

4. Monster Shredder

Experience the mighty mega shredder. The world's largest recycling machine takes the floor space of an entire factory. It will reduce the equivalent of 450 cars an hour to an unrecognizable pulp.

5. Extreme Railway

This is the story of the battle to build a railway across one of the most extreme environments on Earth. To lay down over a thousand kilometres of track in a remote wilderness. To drive 7 tunnels and to raise 675 bridges all at an altitude where even a simple breath is nearly impossible to come by. 140,000 workers and 2000 medics struggled for 5 years to conquer this hostile environment to complete. the Qinghai-Tibet railway, the highest, most extreme railway in the world!

6. Smart Tunnel

How an innovative tunnel in Malaysia was designed to deal with rainwater from storms, as well as provide a solution to traffic problems.

7. World's Fastest Rollercoaster Finale

Formula Rossa - The ultimate speed roller coaster is part of the world's largest indoor theme park - Ferrari World on Yas Island, Abu Dhabi, in the United Arab Emirates. This awe-inspiring ride takes you from 0 to 240 km/h in under 5 seconds. You can feel mind-blowing acceleration like in a Formula One car. Follow construction manager Andreas Granig and his team as they struggle against aggressive conditions in the desert environment and build up a power system which is unseen in the world. 20,800 horsepower propels the F1 Ferrari inspired coaster train to a height of 52 m and lets it run through more than 2km of humps, curves and camelbacks. See the dramatic installations 50 meters above ground. In their quest for speed the engineers overcome heat and danger to take the title for the fastest roller coaster in the world.