We bought this for our 13 year old son who loves building Lego. It took him a few hours, but he's very good at technique and craftsmanship. I find it difficult, but for children, they can figure it out quicker than me. The instruction manual was easy to understand with simple instructions. The ferris wheel is quite big. And work. After building it, he maintained it for several months and then repackaged and donated it. It was a great purchase and he enjoyed building it and showing his work. The height is about 2-3 feet!
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