We were not fighters like them; we were cunning and cowardly, and it was because of our cunning and cowardice, and our inordinate capacity for fear, that we survived in that frightfully hostile environment of the Younger World.
Union Pacific's 4-6-6-4 Challenger steam locomotive #3985 is the largest operating locomotive in the world. Built in July 1943 and still used by UP for occasional excursion throughout the western United States, the 3985 weighs 1,073,900 pounds (537 tons).
show more I have read and am still confused on which Railroad Steam Engine is the Largest and most Powerful ever built. I have read that the either the Union Pacific's Big Boy or Challenger were the largest Most Powerful but have also read the Beyer-Garratt used in Zimbabwe is the Largest and Most Powerful.