stadium designed by british architect zaha hadid. or is it? >> the height is 16 meters. height of the new stadium is 17 meters. so it means ten more meters above. >> reporter: this woman is so angry about the design, she set up a group to try and stop it being built. >> it is shaped like a spaceship. or cycling helmet. for me, it's more like a turtle thing. and the scale too big. going to cut down all those. >> reporter: there is no doubt the design is spectacular. it's also twice as big as london's olympic stadium. but japan's sports council says it was chosen in a fair competition, and there is no need to change it. not true, says one of japan's most sell britted architects. fumiho kumaki says it was chosen by a small group of arrogant bureaucrats. >> i am saying it's ridiculous. they don't listen. because we are not a society where the voice of the citizens could be critical. >> reporter: professor maki fears tokyo will be left with another expensive white elephant, just like beijing and so many other olympic cities. rupert winfield-hayes, bbc news in tokyo. >> let me