Answer:
What is as light as a feather, but not even the strongest man on earth can't hold it for more than 1 c)minute?
It is where kings, queens, knights and bishops go to war together.
A small hill with seven holes.
What comes one time in today, three times in tomorrow and never in the future?
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
It is something you will never see again.