Scientifically speaking, there should be an echo! I assume ducks quack to communicate with other ducks nearby. However, wouldn't an echo confuse this rather addleheaded bird? Sorry, no ducks in the desert!
The reason firehouses have circular stairways is from the days when the engines were pulled by horses. The horses were stabled on the ground floor and figured out how to walk up straight staircases surprising the sleeping firemen upstairs.