[piercehawkeye45]

I thought this was a joke the first time I read this but apparently it is real.

X-Seed 4000 is a proposed skyscraper that looks oddly like Mt. Fuji. Perhaps it’s unsurprising that it could be eventually built in Tokyo, Japan. The tallest building ever fully designed, the X-Seed 4000 would house between 500,000 and 1,000,000 people. A tiny quantity of individuals, if you take into account that the technology to “fabricate” mature adult individuals from raw materials is probably only a few decades away. (A topic that probably deserves a post all its own.)

The X-Seed 4000, which would be 4,000 meters high (13,123.2 feet), would in fact be taller than Mt. Fuji, which is merely 3776 meters high (12,388 ft).

http://www.acceleratingfuture.com/michael/blog/?p=24

More Info:
http://www.geekologie.com/2007/08/ja...ds_tallest.php
http://en.wikipedia.org/wiki/X-Seed_4000


Here is what it will look like: