Answer:
In the land of the green glass door there are riddles but no answers, sheets but no blankets, and books but no words. Name something found in the land of the green glass door.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
Come up and let us go. Go down and here we stay.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
What bird can lift the heaviest weight?