Answer:
The Titanic is still here. What am I?
I come with a train and go with a train and the train doesn't need me but can't go without me.
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.
What is so delicate that saying its name breaks it?
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
It weighs next to nothing but no one can hold it for long. What is it?