This is the second year that Changi took the top spot in Skytrax's World Airport Awards, the most prestigious airport award in the industry.

Skytrax evaluates over 400 airports around the world for service, check-in, transfers, shopping, security, immigration, and more. 

It's no surprise that Changi took the No. 1 spot. The international transit hub has incredible amenities, like a butterfly garden, rooftop pool, movie theaters, hotels, spas, and showers, and even a four-story slide.

Last year, I visited the airport during a trip to Singapore and had a chance to explore. The bottom line: This is a place where you'll actually enjoy having a long layover.