4. Hong Kong International Airport
Built at a cost of $6.4 billion, Hong Kong International Airport accommodates more than 63 million passengers a year. The airport is undergoing massive transformations, which led to the recent closing of its nine-hole golf course. In its place, luxury shopping and hotel amenities will be incorporated. In the meantime you can watch a movie in the IMAX theater or check out the rooftop SkyDeck.
