I had the pleasure of taking the Boeing Factory Tour. I got to see the assembly lines for the 747,777 and the 787. Mind you it is awe inspiring to see 4 747 parked inside this building as workers finish to complete the massive airliner. The 777 line was a marvel of engineering as you can see in the pictures and when i finally got to see 787 line, I wanted to immediately get a job at Boeing. Awesome stuff really. If you get the chance to go to Washington state don't miss out on this.