What's the largest LEGO construction ever? In terms of the number of bricks used.

Is this house, constructed by James May for the show Toy Stories, the biggest?
This house is the biggest lego ever built unless proven otherwise.
I searched a bit and could not find anything using more bricks.

Here are some other project falling short from the 3.3 millions bricks :


Shopville Le Gru,Grugliasco (Italy), 1.5km long, using 2,901,760 bricks, 13 February 2005
LEGO Millyard Project at SEE Science Center in Manchester, 3 millions bricks, permanent


Here is a list of LEGO records : http://www.recordholders.org/en/list/lego.html