Answer:
Half-way up the hill, I see you at last, lying beneath me with your sounds and sights. A city in the twilight, dim and vast, with smoking roofs, soft bells, and gleaming lights.
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
What can you fold but not crease?
What flies forever, Rests never?
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?