Claim: The Beijing Great Wheel(located in Chaoyang Park, Beijing, China) was a would have been monument with a diameter of 198 m (650 ft), equipped with 32 hydraulic motors, an automated boarding system and would have become the  world's tallest Ferris wheel,if it was built.
Evidence: The Beijing Great Wheel, (simplified Chinese: 北京朝天轮; traditional Chinese: 北京朝天輪; pinyin: Běijīng Cháotiānlún) a 208-metre (682 ft) tall giant Ferris wheel, was to have been constructed in eastern Beijing's Chaoyang Park, one of the 2008 Summer Olympics venues. If it had been completed, the wheel would have had a diameter of 198 m (650 ft), and each of its 48 air conditioned observation capsules would have been able to carry up to 40 passengers. Each of the 32 hydraulic motors was to have powered a planetary gearbox driving rubber tyres against the wheel's circumferential rim. An automated boarding system would have enabled the wheel to rotate continuously while passengers boarded and disembarked the capsules via electric feeder vehicles. If it had been built, it would have become the world's tallest Ferris wheel, superseding the 165 m (541 ft) Singapore Flyer (world's tallest 2008-2014).