Singapore Changi Airport — Singapore, Singapore

Singapore Changi Airport has spent decades cultivating a reputation as one of the world's most consistently top-ranked airports, reinforced by Jewel Changi, the doughnut-shaped terminal annex built around the world's tallest indoor waterfall alongside indoor gardens, a hedge maze, and retail spread across multiple levels. As the primary hub for Singapore Airlines and a critical connecting point between Europe, Australia, and destinations across Asia, SIN handles an enormous volume of long-haul transit passengers who often have hours to spend exploring amenities ranging from a rooftop pool to free city tours for eligible travelers. Located in the eastern part of the small city-state, the airport has expanded repeatedly since its original terminal opened in 1981, with additional terminals underway to support Singapore's ambitions as Southeast Asia's dominant aviation hub. Its efficiency and cleanliness have become a global benchmark against which other major airports are frequently measured.