the london eye in england is the biggest big wheel in the world. it rotates with people on it so that they can get a view of the city of london from high up. there are 32 cabins attached to the wheel that carry passengers and it takes one approximately 30 minutes to complete the full revolution. the wheel never stops but moves very slowly to allow people to climb on and off. the london eye is approximately 135m high, weighs 1800 tons and can carry up to 4500 riders a day. From the top of the london eye, one can see up to 40km across the city. what is remarkable is the amazing structure took only 16 months to build!