Stories of Atlantis fill books of mythology, but now the dream of a true underwater city could become reality. Shimizu Corporation is designing an underwater city in the form of a submerged floating dome. The dome would have all of the amenities of life on land, and a lot of features we can only dream about. The city would be attached to the bottom of the ocean using a 9-mile long helical structure that helps to harvest methane, create power using seawater temperature differences, and even use the hydraulic force of the ocean to produce fresh water for residents.
The project is estimated to cost $25 billion, with hopes for construction to start as soon as 2025 with a completion date in 2030.