Whatdaya mean, "thought to be"? Everybody here in New Zealand knows what a weta is. We see them every so often in our gardens. And yes, they're big, at least compared to grasshoppers and crickets. See http://weta.boarsnest.net/

Great photos, and I've now had a good look around the rest of Roger's site, but I can't seem to find any shots of the outside of this house. Surely with all the curves and organic structure, the exterior must look pretty unconventional, too. Can anyone help me out?