I was very lucky and had a ticket paid for as a birthday present. The gigantic ferris wheel holds groups in a clear pod as it gives spectacular views of the city. There are maps in each pod to help show where famous landmarks are. Even from being across the Thames we were able to see Buckingham Palace. I have a mild fear of heights and could not stand close to the walls, but the floor is covered and you can only see straight down if you get close to the walls and look.