Pyramids under the waters of Cuba were discovered by two scientists Paul Weinzweig and Pauline Zalitzki. They found the ruins of ancient buildings for about a mile below the sea and considered them to be Atlantis.(Read the entire article about this here)
Reuters reported that the deep-sea city is located on a huge land plateau lying in around 2,200 feet (700 metres) of water. Furthermore, that in Paulina's opinion the complex belongs to 'the pre-classic period' of Central American history, and was populated by 'an advanced civilization similar to the early Teotihuacán culture of Yucatán'.
'It is stunning,' she said during an interview with the Reuters representative at her office at Tarara, on the coast east of Havana. 'What we see in our high-resolution sonar images are limitless, rolling, white sand plains and, in the middle of this beautiful white sand, there are clear man-made large-size architectural designs. It looks like when you fly over an urban development in a plane and you see highways, tunnels and buildings.
'We don't know what it is, and we don't have the videotaped evidence of this yet, but we do not believe that nature is capable of producing planned symmetrical architecture, unless it is a miracle,' she added.
As tantalizing as this is, it was supposedly found in the early 2000s and yet it's impossible to find reports on where it stands now with research. Of course, it's on the coast of Cuba which might explain why exploration is difficult. I am curious to find out more about this site and I will keep y'all updated if I learn more.