You searched for: “aquapolis
Aquapolis (s) (noun), Aquapoleis (pl)
1. City, or cities, near the water; or water city.
2. A name given to several projects of cities on and under the water: "The name of 'The 8th Wonder of the world is the Aquapolis, the world's first undersea hotel and resort complex'."

"The Aquapolis Hotel says that it will 'hoast over 500 rooms, all of which will have an ocean view' (below the surface) and it is located at Mykonos, Cydades Islands, Greece."