Although with its planned 634 m, it will fall short considerably of the 828 m of the Burj Khalifa of Dubai, it will still beat the 509.2 m of the Taipei 101 (somewhat less) considerably and is thus expected to be, at least for a little while, the world’s second tallest structure.
The name of Tokyo Sky Tree (we are informed that “The “tree” symbolizes a place where people gather and share their hearts.”) may seem a little odd, but it’s probably still better than some of the other suggested names, such as Rising East Tower. The main purpose of the Sky Tree is to serve as a broadcasting antenna for digital TV, a job for which the original Tokyo Tower (with a mere 332.5 m) turns out to be too short due to the obstructions created by other tall buildings of central Tokyo. Even though we can watch the Sky Tree grow from our balcony, I am sorry to say that the Grand Opening in Spring 2012 will be several months after the end of our term at IPMU.
Update Oct. 6 2010. This is what it looks like now.
Check out new pictures of the sky tree here.