Advertisement Megastructures Save Favourite 0 saved National Geographic Ended 6 Seasons · 91 Episodes · Premiered September 15, 2004 · Ended November 17, 2011 Take an eye-popping look at the greatest structures and machines ever created as we focus on some of the world's modern-day super-human miracles of construction. Where to Watch: National Geographic Official Site Next Air Time: No upcoming air date Seasons & Episodes Season 1 10 episodes 2004 Season 2 28 episodes 2005 Season 3 12 episodes 2006 Season 4 28 episodes 2007 Season 5 7 episodes 2009 Season 6 6 episodes 2011 More on National Geographic Aftermath Bloody Tales of the Tower Jurassic CSI Untamed Americas The '80s: The Decade That Made Us To Catch a Smuggler Advertisement User Reviews Rate this show Your star rating (required) ★ ★ ★ ★ ★ Submit Review
