Logic Riddles

Question: What takes you up and brings you down but never moves?

Question: What is in the valley of the glass doors. Listen to the words the houses have no roofs or doors, it just has walls. So what's in the valley of the glass doors?

Question: There are 3 chests, labelled food, beds and food and beds.True enough, one chest contains only food, one chest contains only beds and one chest contains both. You are warned that the chests' labels may be lying collectively, or not at all. How can you tell which chest contains what by just opening one of them?

Question: What`s in the middle of Paris?

Question: When angry it turns red, cold it turns blue and pale when scared.