I wonder what happens when you acquire ownership right of Hanging Gardens of Babylon through conquest and you already have the luxury manufactory and thus benefiting from the wondrous effect of the luxury resource on top of which Hanging Gardens of Babylon was built. Do you receive additional bonuses from practically having two lux manufactories for the same resource or does it apply only once?

I've built Dye Manufactory in one of my cities before conquering an enemy city which happens to have Hanging Gardens of Babylon built on dye as well. Now I'm trying to decide whether to raze this city to re-build my own outpost and eventually attach to my existing city or leave as it is. If I go for the former option I know all the bonuses from Hanging Gardens of Babylon will be lost since there is a bug in the game that cause wonders to stop providing bonuses if the territory of the wonder is detached and re-attached to a different city.

Bump, i am also curious about this. Since i have not been in a Situation where i can test it, but i am assuming you only get the benefit once, since it seems to be a check. Do you get the wondrous effect: yes or no. There doesn't seem to be the Option to stack it.

Ahh i see so essentially it just acts like a extra source of dye, that very interesting to know. Thank you for taking the time to try that.