Here's why Singapore's incredible airport was just named best in the world again

Singapore's Changi Airport was just named the world's best airport in 2015 by the World Airport Awards.

This is the third 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.

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

Disclosure: Our trip to Singapore, including travel and lodging expenses, was sponsored by the Singapore Tourism Board.