If you get impressed by towers, it's probably impressive. I am impressed that unlike Roppongi Hills it seems that it is making an effort to integrate into public space rather than being a self contained fortress.
As of today it's 497metres, and going up at the rate of 1m / day, at this rate it may be finished ahead of its Nov 2011 schedule.
|1 April 2010 near Nippori Station|
|23 December 2009|
|3 November 2010|
|14 April 2010|
|497m as of 3 Nov 2010|
|Onward upward to 634m|