cities around the world have learned that tourists really like Ferris wheels – huge ones. In 2000, London built its famous Eye, standing 443 feet tall. But Singapore didn't wait long before ...

How tall: 165 meters (about 541.3 feet) Rising just over 540 feet, the Singapore Flyer is the world's tallest operating Ferris wheel. A couple of other, loftier wheels (like the Beijing Great ...