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Season 9 Episode
- Season 4 Dubai's Dream Palace (Worlds Tallest Hotel)
- Season 4 Ultimate Structures: Super Copter
- Season 4 Queen Mary 2
- Season 4 South Pole Station
- Season 4 Beijing Water Cube
- Season 4 Episode 6
- Season 4 Episode 7
- Season 4 Episode 8
- Season 4 Deep Ocean Port (China's Ultimate Port)
- Season 4 Episode 10
- Season 4 The World's Biggest Cruiseliner
- Season 4 Beijing Olympic Stadium
- Season 4 Episode 13
- Season 4 Episode 14
- Season 4 Future Trains
- Season 4 Building the World
- Season 4 Episode 17
- Season 4 Building Green Beijing
- Season 4 Atom Smasher
- Season 4 Megabridges: China
- Season 4 Ultimate Structures: Super Sub
- Season 4 Sun Engine
- Season 4 Super Pipeline
- Season 4 Hawaii Superferry
- Season 4 Extreme Alaska
- Season 4 World Trade Center Bahrain
- Season 4 The World's Biggest Shredder
- Season 4 Impossible Hotels: Dubai
- Season 4 Building Green Beijing
MegaStructures - Season 4 Episode 25 Extreme Alaska
7.00 60 minutes Building Extreme Alaska is about how nature engineered and built America's most rugged state, rock by rock. The State of Alaska is a vast and powerful natural structure forged over millions of years and boasts some of the world's most extreme environments. Alaska is raw and radical - natural engineering - taken to its limit. The construction zone of mountains, volcanoes, glaciers and earthquakes still keep Alaska humming. Building Extreme Alaska leads you through the working parts of this natural mechanical engineering machine.
