Answer:
I have cities with no people, forests with no trees, and oceans with no water. What am I?
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
What can fill a room but takes up no space?
No matter how little or how much you use me, you change me every month.