Answer:
I am higher than the king
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
I have a frame but no picture. I have poles but not standing up
In wealth I abound; in water I stand; as a fencer I'm valued all over the land; at Venice I'm famous; by farmers I'm prized; respected by law yet huntsmen despised; consternation and ruin ensue when I break; And the beasts of the forest advantage won't take.
I have no weight but I could destroy a mansion. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.