Objects from above

-What's this?
-An object from above.
-I don't understand.. Some kind of construction, but I don't recognize it.
- How often do you look up, dear man?
- What?
- How often do you raise your eyes up?
- I don't even know... It's really rare these days. When I was a little kid, it was quite fun: now to feed your eyes on the clouds in the sky, now to stare at the ceiling. And what is this?
- Well, you see, that's why you don't understand what is depicted here. You've forgotten what objects look like from above. You don't recognize the roof of the simplest gazebo anymore.