Transwikied from- http://lifeafterpeople.wikia.com/wiki/Special:CreateBlogPage?pageId=3326
X-Seed 4000 is a vision skyscraper to be built in Tokyo as tall as 4km, but if it was built, how long will it stand.
500 Years after people The skyscraper is about to encounter some severe 10.2 Earthquake, That type of earthquake is extremely rare but it strikes the X-Seed 4000.The tower strangely survives.
2,000 Years after people The tower has survived earthquakes,tsunamis,and storms.But now,a severe thunderstorm strikes.Lightning hits the antenna,causing it to fall.Heavenly strikes of light devastate the tower.
5,000 Years after people Another super storm hits. Lightning strikes one side,then the top.So much heat is generated that the tower can't stand it.The roof collapses,then the walls cave in.The tower is no more.