Finally I'll show you one of the famous landmarks of Vienna, the Riesenrad (Ferris wheel):
I know, it's not the only one in the world. And then it's nothing special, really, if it weren't described as tourist attraction in (presumably) every traveller's guide.
You'll have to pay a lot to travel the Riesenrad of Vienna while you get almost the exact same view of the slightly smaller Blümerlrad (flower wheel) which is considerably cheaper.
So you'll best forget about the Riesenrad and go for the Blümerlrad, is what I'd recommend. And what I did, too. I never ever took the Riesenrad, you know.