[Oztrich Boy]

I recall a TV program where they attempted to recreate ancient technology, and they reached the conclusion that a water screw was the only way the Hanging Gardens of Babylon could have been watered.

A Shadoof system might have delivered the volume, but the whole structure would have looked like a building site, cranes and workers instead of vegetation. Whereas a waterscrew system would have been visually non-obtrusive, and the workers could have been hidden below ground.

[SunkenCiv]

Thanks Oztrich Boy.