🛫 Heathrow Airport, London — one of the world’s busiest international gateways — has undergone remarkable transformation since 1999. The development of Terminal 5 (opened in 2008) and the modernization of Terminals 2 and 3 have redefined its global status. With continuous infrastructure expansion, advanced air traffic systems, and sustainability-driven designs, Heathrow has evolved into a benchmark of 21st-century aviation excellence — combining efficiency, innovation, and passenger comfort at