Answer:
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
Who is it that rows quickly with four oars, but never comes out from under his own roof?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
What is it that given one, you’ll have either two or none?
Iron roof, glass walls, burns and burns and never falls.
I have two eyes in the front and a lot of eyes on my tail