Answer:
A building where people and stories are on stage
Long and slinky like a trout, never sings till it's guts come out.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
I have legs but never walk, I may have flowers but no soil, I hold food but never eat.
Describes a mysterious region and a stylish pair of shorts.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.