I've been working on building Atlantis for a few months now. My main source of inspiration and ideas for this project is Atlantis from AC Odyssey's DLC : The Fate of Atlantis.
The first picture is based on The palace of Poseidon which is the central masterpiece of both the city in AC odyssey and in my project.
The second picture is a replica of The Gates of Atlantis (I intend to implement 4 of these in my work, 1 per direction).
The third picture is a rough design for the overall landscape I am going for the city. Work is still in progress on that matter.

The Future of Project Atlantis :

*Implement a decently big mountain in the center of the city on which the palace will lie. Just like in the game.
* Implement a road system that would connect everything in a vast, complex system in order to make the city look alive and dynamic.
* Design and implement suitable houses that would fit in perfectly in the second ring of Atlantis.
* Design and implement fields in the second ring for the people of Atlantis.
* Design and implement decorations (carts, crates, stalls, markets, shops, hanging banners, etc...) in order to make the city as alive as possible.

This project is still in early development phase and I am open on any ideas, suggestions on how I can improve what has been done in order to make this project as perfect as possible. This is my life's work and I want this to look as good as possible.

After I am done doing everything in creative I then intend to build it in survival/SMP as my mega base.