2. Incheon International Airport
Located on an island right outside Seoul, the South Korean capital, Incheon International Airport ranks as the second best airport in the world, according to Skytrax, a U.K. consultancy that reviews and rates airports. Incheon is the largest duty-free shopping destination in the world, accounting for $2 billion in revenue last year. The site of the first Louis Vuitton duty-free store, Incheon also hosts cultural performances, live music, an artifact-filled museum, gardens, a spa and an ice rink called the Ice Forest.
