Rachel Chu (played by Constance Wu) was not kidding when she said, "We aren't in LaGuardia [airport] anymore." Named the best airport in the world a staggering six times, Changi Airport has multiple themed gardens (favorites include the cactus garden on the roof and the butterfly garden, which holds more than a thousand butterflies), a 12-meter-high slide, a kinetic rain art installation, and a full-on play you could catch, Peranakan Love Story, a tale of two young adults set in Singapore in the 1930s.
If you are flying elsewhere in Asia, plan a stopover in the Changi Airport, because it offers free tours of Singapore for travelers with layovers over 5.5 and under 24 hours. You'll have to show your boarding pass as proof, but it's a great inexpensive way to see the very expensive city.