Here's a gallery of a 59-feet-tall 1:1 Gundam robot, lying down in its base at Mount Fuji. I know the world is entranced by Transformers right now, but please excuse my enthusiasm when I say... "it's full-scale Gundam! A REAL GUNDAM! Look at those pics! LOOK AT THAT DETAIL! OMFG!" OK, much better now. We told you about the project before, but as you can see now it is a reality. And you can even get inside the cockpit while you play in the interactive Gundam Crisis attraction that surrounds it. [Impress Robot Watch]
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They made it really well with amazing detail of parts and components that seems like it is a real robot. It doesn't need to stand up because it is an attraction by itself. Although standing it up is a good idea but it add more risks as a factor since you have to create safe elevated platforms for the tourists and ensure their safety. Also you will have to ensure that the integrity of the "GUNDAM" to hold the weight and movement of # of tourists. The factor of risks alone would cost more money and time.
Sure anyone can build a robot, I can do it too with cardboards; but can anyone do it with great details and sensible materials?
As an attraction, I think it is fine the way it is.