Answer:
What building has the most stories?
Without a bridle or a saddle across a thing I ride a-straddle. And those I ride by help of me though almost blind are made to see.
What goes all around the world but never leaves its corner?
What is so fragile that saying its name breaks it?
Long and thin red within with a nail at the end.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?