Singapore Changi Airport (SIN)

Singapore Changi Airport operates four terminals with world-class facilities. Terminals 1-3 are interconnected by the complimentary Skytrain (operating 24/7) and walkways, while Terminal 4 operates separately with free shuttle bus service every 10-20 minutes. T1 features an H-shaped layout with swimming pool, Kinetic Rain sculpture, and tropical garden. T2 has a linear design with Sunflower Garden and movie theatres. T3 offers a butterfly-shaped layout with five-story vertical garden, Butterfly Garden, and 24-hour free cinema. T4 is compact with automated systems and Peranakan heritage zone featuring Petalclouds kinetic sculpture. Jewel Changi Airport, between T2-T3 and connected to T1, houses the world's tallest indoor waterfall (HSBC Rain Vortex), extensive shopping, dining, and entertainment. Each terminal offers luxury lounges, duty-free shopping, diverse dining from local to international cuisine, transit hotels, and unique attractions. Transfer between T1-T3 takes 5-10 minutes via Skytrain, while T4 transfers require 20-30 minutes including shuttle bus time.