Answer:
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
I have memories but none of my own whatever's on my inside is what is shown. If I'm ever different it's because you changed me I feel like a decoration here for you to arrange me.
Man walks over, man walks under, in times of war he burns asunder. What is it?
I'm not really more than holes tied to more holes; I'm strong as good steel, though not as stiff as a pole.
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?