Changi Airport, serving the glitzy Asian hub of Singapore, is regularly listed in international rankings as one of the best and most beautiful airports in the world. To cement this status, the already impressive complex is now set to gain a new mega terminal, and Prime Minister Lawrence Wong has announced that work will begin on the long-planned Terminal 5 (T5) in the first half of 2025. Due to open in the mid-2030s, the new terminal alone is expected to have an annual capacity of around 50 million passengers. To compare, the airport used to handle 68.3 million passengers in all terminals comb…