The largest steam locomotive in the world, called, Big Boy is going to be restored to operating condition. The 844 and 3985 Challenger are already running, but it looks like sometime in the future, we'll have the biggest one in the world running around. I'm excited about this. I can't wait to see it running.
Little explaination on Big Boys.
https://www.youtube.com/watch?v=JqHybxk ... Bg&index=4
EDIT on 3/9/14: Sorry, YouTube deleted the video for copyright violations. Here's one that's still up
http://www.youtube.com/watch?v=M4BWsYbJROQ