Japan is planning to construct world’s tallest building inspired by Mount Fuji, Japan. Taisei Construction Corporation has completed the designs for construction of the building, X-Seed 4000 with the height of approximately 13,123 feet (4 km), nearly 700 feet (213 m) taller than the real Mount Fuji.
The X-Seed has up to 800 floors, and capable of housing between 500,000 and 1,000,000 people. The design emphasized in using solar power to maintain its internal environmental conditions. Due to its height, X-Seed would be required to actively protect its occupants from considerable air pressure gradations and weather fluctuations along its massive elevation.
No exact budget was announced to construct the world’s tallest building but some experts estimated the cost may be somewhere between $300-900 billion US dollars.
If they end up doing that, I believe it would be the only building which can be seen from the moon.
