This is the Heaven's Fall custom flavor of a 3-tiered Temple of Tides. I know other people have also given their hand at a 3-tiered Naga town center, but I particularly like the Tier 3 of this one that I created. So, if I was you, I would probably import Tier 3 of this naga hall onto somebody else's Naga hall, so that you had maximized levels of awesome at each tier of your Temple of Tides.
I give you full permission to do that with this model, or whatever else you want really.
There are only 2 icons attached because the Tier 2 hall looks identical to the in-game Temple of Tides model, so the suggestion is to use Blizzard's Temple of Tides icon for the Tier 2 hall.
Edit: 2021-10-24: I modified my own version of this model so that the portrait would use a different camera angle a few months ago for the Heaven's Fall Warcraft Mod. It occurred to me that there are people using this model in their own projects and they might want the fix, so I uploaded the fixed version. (Specifically I was trying to make the portrait look better at Tier 1)