Inhabitat reports on what will become the world’s largest building:

Moscow’s rapidly growing skyline will soon feature an eye-popping new addition: Crystal Island, which will be the world’s biggest building when completed. Sir Norman Foster’s mountainous 27 million square feet spiraling “city within a building” will cost $4 billion and it is scheduled to be built within next 5 years.

The Crystal Island will be Lord Foster’s second large scale project in the Russian capital, and his third new building design that resembles a volcano (we’re talking about his two mountainous buildings in Astana, Kazakstan). Although many people are calling this design the ‘Christmas Tree’ of Moscow - we can’t help but be reminded of the utopian and also rather volcanic X-Seed 4000 design for Tokyo.