What is the structure Japan is quot;planningquot; to make, that would be the worlds biggest building ever? -

What is the structure Japan is quot;planningquot; to make, that would be the worlds biggest building ever? I ve seen it on a tv channel, I think discovery, but I forgot what it was called.

Another concept is this. Skycity http://en.wikipedia.org/wiki/Sky_City_10... http://dsc.discovery.com/convergence/eng... and recent plan is new Tokyo tower. It will be tallest tower (not bldg) in the world. SUMIDA-Tower http://www.sumida-tower.jp/gallery/image...

Shanghai World Financial Center, its being built in china, but it was designed by the japanese

They are not currently planning to build any building that would be the world s biggest. HOWEVER, the largest building ever fully engineered, by far, is indeed designed to be placed in the ocean near Tokyo, if it is ever built (there are no plans to do so at the moment). It is called the X-Seed 4000, the 4000 standing for its height: At 4000 meters tall, it would be taller than Mount Fuji, Japan s tallest mountain, and it would cost about half a trillion dollars to build. http://en.wikipedia.org/wiki/X-Seed_4000 Here are some concept pictures of it: http://www.acceleratingfuture.com/michae... http://www.paris-art.com/photos/Co-Berns... http://www.die-wolkenkratzer.de/pics/x-s... A smaller, similar structure called Pyramid City is also designed for Tokyo, although again there are no plans to build it. Both it and the X-Seed 4000 are arcologies, an arcology essentially being a building that contains an entire functioning city, bypassing standard zoning laws; they are generally planned as being very big. http://en.wikipedia.org/wiki/Arcology