Here is something for you: it seems to be well known that there actually was a garden palace and Nineveh, and it is a very common theory that it was attributed to Babylon out of bad translation. Babylon means "Gates of the Gods" and other cities may have co-opted the title.
https://news.nationalgeographic.com/...seven-wonders/
We have actually seen this kind of thing in other cultures, similar to all great cities in Mexico being called "Tulla," leading to its own confusions.
Sennacherib apprently built an extensive canal system, and there is apparently a stella in Sennacherib's palace depicting them.
And inscription about them reads:
I planted a great park beside the palace, like that of the Amanus Mountain, with all kinds of herbs and fruit trees which came from the mountains and from Babylonia
Apparently and Archimedes screw sytem was used. to water the gardens.
https://www.youtube.com/watch?v=WyWLIaOse4s
Also, this story seems dubious because I am not seeing it reported in credible places, but it is worth a look:
https://www.salon.com/2017/03/12/did...ns-of-babylon/