On a recent trip to Odaiba, Aki and I managed to get a seat on the giant wheel there. It looks pretty nice from a distance, colours swirling and so on, but it's usually too crowded to think about queueing. The view from the wheel itself is pretty good and here's a shot towards the Fuji TV centre.
It wasn't scary until Aki started hopping around taking pictures in different directions. The word here was sway.