What am I?

I can’t go left, I can’t go right. I am forever stuck in a building over three stories high. What am I?

related riddles

You turn me over after you have traveled far. What am I?

I am a container with no sides and no lid, yet golden treasure lays inside. What am I?

When you have me, you feel like sharing me. But, if you do share me, you don't have me. What am I?