The Cuban Underwater City

One of the most mysterious underwater buildings is the Cuban Underwater City. When a team of explorers was on an exploration and survey mission off the western coast of Cuba about two decades ago, their sonar equipment picked up a strange collection of stone structures lying some 650 meters below the surface. The constructions appeared to be symmetrically ordered stones suggestive of urban development and appeared to be completely similar to the barren 'desert' of the ocean floor.

According to Avis Lee (a Mysteries Unsolved writer), the ADC team was studying the Cuban waters with modern Sonar equipment when they found unusual boulders and granite formations on the seafloor. The objects were symmetrical and geometrical stone shapes, unlike what you'd expect to see among urban civilization remnants. The search area was 2 square kilometers in size, with depths ranging from 2000 to 2460 feet.

The researchers despatched an underwater visual robot to re-record photographs of the structures in higher quality and clarity for a closer look. The latest images revealed somewhat pyramidal and circular formations formed of large smooth stones that resembled hewn granite. Pyramids supposedly measured 8 feet by 10 feet in height and width. Some rocks were stacked on top of each other, whereas others were not and were located much further away. Sonar pictures of symmetrical and geometric stone structures resembling an urban complex were originally obtained in early 2001, encompassing an area of 2 square kilometers (200 hectares) at depths ranging from 600 meters (2,000 ft) to 750 meters (2,460 ft). The finding was reported by Pauline Zalitzki, a maritime engineer, and her husband Paul Weinzweig, proprietors of Advanced Digital Communications, a Canadian company working on an exploration and survey mission with the Cuban government. The team returned to the site using an underwater remotely controlled vehicle, which captured sonar photos of numerous pyramids and circular structures constructed of enormous, polished chunks of stone that resembled hewn granite. Zalitzki stated "It's a really wonderful structure which really looks like it could have been a large urban center. However, it would be totally irresponsible to say what it was before we have evidence."

Location: Pinar del Río, Cuba
Depth: 700m
Dating: 6,000 years