The ‘Earth Factory’ portion of the project below is set to use generate eco-friendly energy from temperature differentials and organically-driven chemical conversion processes. Designed by the Shimizu Corp’s, the spherical portion of the so-called Ocean Spiral forms a residential and commercial core from which a winding path spirals 9 further miles into the deep, ultimately terminating at the ocean floor. Occupants would live and work both in triangular neighborhoods along the periphery as well as within a tapering, hourglass-shaped, skyscraper-like segment stretching up from the bottom to the top of the sphere’s center. Seabed City: Japanese Company Designs Underwater Ocean Spiral
Slated to cost over $25 billion and take 5 years to complete, this incredible proposal starts a with a living sphere that spans over 1,500 feet below the surface of the ocean.