The 3 season of Extreme Engineering was broadcast on from mercredi 19 octobre 2005 to samedi 21 janvier 2006. It consists of 6 episodes, the first one is called "The Snohvit Arctic Gas Processing Platform" and the last one "Dubai's Ski Resort".
Each episode of Extreme Engineering discussed some major construction project, some of them are projects that have already been completed like Hong Kong's airport. Others talked abount projects that are currently under construction like Tuneling Under the Alps. And some episodes talked about more futuristic projects that may never be done like the Transatlantic Tunnel. Most episodes finished by examining some sort of disaster scenario which could threaten or ruin the project that was being examined.