Answer:
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
What English word has three consecutive double letters?
What has a bell but isn't a church. Is full of air but is not a balloon?
What is it which builds things up? Lays mountains low? Dries up lakes, and makes things grow? Cares not a whim about your passing? And is like few other things, because it is everlasting?
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
What is so fragile that saying its name breaks it?