I still remember my childhood days (back in late 70's and early 80's) visiting to Diesel Locomotive Works factory in Varanasi on Vishwakakrma Puja day.
As I was staying very close to the factory (just 2 km away), during this day, the factory was open for visitors.
Though I don't know the various engine models, but being close to them always fascinated me.
I...
more... also managed to go inside the engine, see and touch all the controls, a sneak peak of the opened engine, a walk inside the various sections of the factory, the giant machines... ooh still i am thrilled.