Bosses of the Eden Project have denied reports claiming that the Cornish attraction lost £4 million last year due to a fall in visitor numbers.
It was alleged that Grimshaw's domed conservatories in St Austell had attracted almost 20 per cent fewer visitors during 2003 than in the preceding year.
However, Eden's director of communications, Bryher Scudamore, dismissed the rumours as 'inaccurate'.
'The facts speak for themselves - Eden is still attracting more than double the visitors it originally planned for, ' Scudamore said.
A spokesman for the charity also maintained that the next phase of development at the centre, and the progress of the nearly completed staff facilities designed by Haskoll, were still on course.
Even so, the Eden Project was recently named among Britain's worst tourist attractions in a book by former arts minister Mark Fisher.