Atlantis II
The triangular gate that was more than 20 meters tall had a thin blue line that everyone had to pass through. If you didn't have something that identified you as an inhabitant of Atlantis, you wouldn't be able to get in.
Noah followed the Mermaid that had caused a commotion outside by grandly pronouncing his arrival as they crossed the thin film of light. It felt as if multiple unknown things were scanning him up and down, the Champion's Trident he had taken out blinking twice in his hands as he passed through with no problems.
The mermaid looked back at him as behind her, the full grandiosity of Atlantis spread out before Noah's eyes. He thought there were a lot of golden ships and submarines outside, but he was hugely mistaken. The inside of the underwater city was even more spectacular as architecture of all sorts of styles and sizes could be seen.