I have never been there, nor think I will ever have the chance but you never know. Unfortunately climate change, or the fake climate change, is somehow causing sea levels to rise, and with it the drowning of such an iconic city. An entire heritage lost...BUT I just had a flash reading @trincowski's comment.... what if knowing that the city will not be salvageable, if that is the final analysis, then prepare the enitre city for going under.
What I mean is that maybe they can figure out a way to preserve the city by treating it prior to going under the ocean with some sort of coating that will protect as much of the city as possible for as long asa possible while under the ocean. It can then remain an attraction, albeit under water, and remain in tact for as long as possible due to the preservation efforts prior to going under.
This idea came from an old memory of a friend telling me a story him going diving many years prior to even being told the story about him diving in some lake somewhere in Mexico where there was a city or village under water. Maybe it was a church.... but definitely a dive story in a lake where there was a building or buildings.... the story told to me was a long time ago.
Anyhow, I hope this doesn't ever come to pass...