Singapore's Changi Airport recently unveiled plans to open a mixed-use complex in 2019, promising a five-story indoor garden, among other attractions.
The pressure is on to maintain the title of world's best airport — which it's held for the past five years — as ranked by Skytrax's World Airport Awards. It's also considered the best airport in which to sleep by many reviews and bloggers.
The airport's offerings and amenities are far and wide ranging, from a free movie theater, rooftop swimming pool, and butterfly garden featuring more than 1,000 insects from among 40 different species.
The airport is even marketed as its own destination within Singapore, where it's not uncommon to see families visit Changi to shop and dine on weekends. It's also known to be a hot spot for students looking for a coffee shop to study in.
CNBC went behind the scenes to explore how the world's best airport is designed.