"Singapore Flyer" was the largest ferris wheel in the world (in 2014 in Las Vegas was built ferris wheel High Roller with a height of 167.6 meters). It has a height of 165 meters and the construction cost of $192 million, which was invested by Germans. The wheel makes a complete rotation in 30 minutes, and during that time you will have a good opportunity to explore all sights of the downtown.
The wheel opened in 2008. It is curious that tickets for the first three nights cost the sky-high S$8888 ($6271) and were sold out. The number 8 is considered lucky in Chinese culture, which has a large impact on Singapore.
The wheel has 28 enclosed air-conditioned capsules, each of which can accommodate 28 passengers, but it is better when there's no more than 5-7 passengers, so that you can move freely inside.
There is a good National Geographic movie about the "Singapore Flyer"
Getting there: Promenade metro station, Exit A, then along the blue signs to the wheel. Ticket cost is about $24.